The gradual decline of smaller pockets of dinosaurs post-asteroids is a sad prospect to try to picture; rare beasts just keeping on going, and persisting on in spite of their situation. A few images I remember from older documentaries still stuck with me: a recently hatched baby Alamosaurus wandering a bone graveyard of adults, and a lone raptor waiting under shelter from the snow, uncertain of its own future in the long winter. On the flip side at least, the fact that smaller creatures and plants still survived such a cataclysmic event and subsequent winter is always impressive to me.
A majority of raptor species are actually much much smaller than what you see in Jurassic Park. And this is just my Personal theory, but I think a bit of them probably survived. Given that we see a lot of small lizards today
@@AnthonyDoesUA-cam Small lizards are actually in an entirely different clade than dinosaurs and the surviving dinosaurs actually evolved into bird (Which makes birds reptiles which is pretty cool)
Apparently there was a study not too long ago where they found pollen in the bottom of a lake dating back to the asteroid impact. The pollen indicated that it was spring time when the asteroid hit
Finally a video that is not just like "Birds are dinosaurs so they actually survived till today" but answering the question of how long dinosaurs that we associate as being dinosaurs actually survived.
India was a long way from the impact site, and had a tropical climate that might have made it easier for non avian dinosaurs to pull through, had the Deccan traps not erupted. That's an interesting alternate history to consider, imagine a dinosaur dominated ecosystem continuing while mammals take over the rest of the world as in our timeline, only for the two worlds to meet when India finally collided with Asia
The continents weren’t where they are now when the asteroid hit. It was fairly soon after Pangaea broke up that the asteroid hit. The area where the impact happened is now the Yucatan peninsula, in Mexico. It moved there through plate tectonics. Earth looked nothing like it is now. And it’s still changing. Look at Iceland! That planet is being torn apart by plate tectonics. It’s a continuous and uncontrolled action. 🇨🇦🇨🇦
It's possible a similar event MIGHT have actually happened in the real world, minus the continental collision. A few years back it was discovered that New Zealand is actually it's own continent that has mostly sunk below the ocean, but would have been at the surface during the Mesozoic. A few fossil teeth that MIGHT be dinosaur teeth have been recovered from the ocean floor there and were dated to the Eocene if I remember right. This now sunken continent would have been the best possible place for dinosaurs to survive, as it was pretty much on the opposite side of the planet from the meteor impact. Then of course being driven to extinction as the island continent sank.
It's depressing thinking that non avian dinosaurs still endured the apocalypse thousands of years after the asteroid hit and were so close to surviving into the paleogene, but simply weren't lucky enough
It’s kinda sad to think about, but at one point, there was only a single dinosaur left on the entire planet. And I don’t mean birds, I mean what you think of as a dinosaur
The biodiversity loss continued for 30,000 years after the impact, if that gives you any idea of how the more resilient species struggled after the downturn.
@@noterrormanagement Avian dinosaurs could have used mammalian or reptilian burrows. Also there are several bird species that burrow. The commonality is that small species survived on land.
@@noterrormanagement alot, technically birds were widespread and had millions of years to evolve by then. Whales went from land dweller to the massive whales in less time than the first avian dinosaur to the late cretacious. Many species died but I am sure there were small species and burrowing species by then
I went to a site in Poland where the KPG boundary is preserved, and what's funny about the site is that you can find perfectly preserved Belemnites a good 30-50 centimetre above the boundary, even though it's a carbonate formation where the sedimentation was obviously much slower after the KPG event. It is possible these are redeposited, but the one I got from there is so prestinely preserved you can still see the imprints of blood vessels on the Belemnites shell. So this was likely a 'Dead clade walking'. one of the, if not The, last species of a clade that survived the extinction event, but eventually was out competed in the new world that followed.
Yeah. I get it, scientists are human too, and they have human psychology, which makes them seek social validation. They don't want to be seen as the loony scientist that thinks people rode dinosaurs, which is what normies imagine when you say dinosaurs survived for a half million years (or longer) after the extinction event, but I think there could be something in the Colorado paleontologists' study. How many times have scientists been told something is true and clung to their "scientific" dogma only to find out, "surprise! Turns out you have free mitochondria in your blood."
W Polsce budowaliśmy z wapienia całe zamki, pałace i mury miejskie. I sporo z nich stoi do dziś a na fragmentach skał widać amonity. Rejon ten to Jura Krakowsko-Częstochowska
A lot of preserved genetic material has now been recovered from dino fossil like collagen indicating some may have survived untill very recently. Many peer reviewed studies. Being ignored or suppressed. Doesn't help being promoted by religious conservatives. So prob need to check this info out properly.
It seems like the K-T extinction was far more devastating,almost completely wiping out entire orders of animals(archosauria, coleoidea, pan-testudines,holostei, sarcopterygii), while during the permian-triassic extinction it seemed like a lot more orders survived, and only orders on the decline like eurypterids or trilobites were finished off. Whats very wierd is how small generalist animals tend to survive mass extinctions, as this applies to synapsids during both the P-T and K-T extinctions, but when it comes to diapsids, mostly highly specialized species(birds, snakes, crocodiles) seemed to have survived, while most generalist diapsids, especially those belonging to archosauria were wiped out.
We need to remember that the fossil record gives us a very incomplete picture of Earth’s deep past. It’s very likely that a few populations of non-avian dinosaurs held out for a while and ultimately lost out to new competition.
@@martinharris5017 and worse, it's extremely strongly biased towards lowland habitats with standing water. We will never know what the mountain fauna & flora looked like.
You are mixing up the notions of "possible" and "likely". The fossil record is incomplete by definition but that doesn't mean everything we can imagine "likely" existed. Given the global effects on atmosphere and biosphere it's not likely at all that large dinosaurs survived the end of food availability for more than a year or so.
@@MrDael01 You’re operating under the assumption that all non-avian dinosaurs were big. I say likely because things are rarely so clean cut black and white.
"The Road" but with dinosaurs. Hatchlings traveling through the post apocalypic world to get to the US Southwest could actually be a good story. Dark "Land Before Time".
It would not surprise me at all if there were several species of non-avian dinosaurs that prospered after the KT impact, but whose luck/adaptability ran out a few (hundred thousand? million?) years later.
Million is probably impossible. At that point you'd see it not only in the fossil record but you'd likely have seen dinosaurs adapt into new post KT kinds of dinosaurs. For reference Neanderthals appear in the fossil record 800K years ago at the oldest theorized.
@@calvinware7957 You are assuming that 'existing' means 'will be fossilized'. A species not appearing in the fossil record for several million years is not at all unusual. The image of the past that the fossil record provides is so low-resolution that 'absence of evidence' is not at all 'evidence of absence'.
@@calvinware7957 Nope. That is not at all guaranteed. Only a very small percentage of creatures get fossilized. Once again, absence of evidence is NOT evidence of absence. It may convincingly persuade someone that it isn't there, but it is not evidence that a particular species is not there. "Likely" and "definitely" are two entirely different things.
For the ammonoids, I remember hearing one video saying that they persisted for a good while after the extinction event, but slowly disappeared with the rise of certain sea mammals (which were able to prey them out of their shells in a way that marine reptiles couldn’t) - everywhere they arrived, the ammonites disappeared, with only the nautilus remaining in the one region they didn’t colonize If this is the case then it’s amazing for me to think that if things had been just a little different, they might still be around to this day (at least until humans come along and hunt them into extinction) Edit: According to a couple comments I’m confusing ammonoids with nautiloids, which I thought were the only surviving members of their lineage due to them both being shelled cephalopods, but I assume they’re actually separate lineages. Either way, the idea mentioned earlier is still interesting to think about; how if things had been different they might still be around, at least for a time
As a prior commenter mentioned, you’re probably mistaking ammonoids for nautiloids (if I know what video you’re talking about, I watched it too; it was about the nautiloids). Ammonoids like Sphenodiscus did persist, but only for a very short time; it’s thought that the sheer volume of plankton that died in the extinction event killed off both their food source and their offspring, leaving their populations irreparably damaged and barely drifting onward for the earliest Paleocene.
@@malcontender6319 I’m just saying that it’s very likely. Ammonoids are very slow and so very easy for us to catch with nets, etc., then it’s a simple matter of using tools to pry them out of their shells, meaning as we started hunting them we’d have a huge impact on their population and they probably wouldn’t be able to adapt quickly enough before going extinct or at least suffer from a major decline in their numbers and diversity.
Stop condescendingly pointing out minor grammatical errors that don't impact the comprehensibility of the sentence, it makes you appear pretentious rather than intelligent. @@javiermoretti1825
Coelacanth was around BEFORE the dinosaurs, survived the Dino extinction, and still swims in the sea to this day. Thought to be extinct until one was caught in 1938. The REAL grandpa veteran of the planet.
Correct. There's a beauty in the survivors DNA and effective design, that haven't changed much in 300 million years...crocodiles, dragonflies, horseshoe crabs, coelacanth, etc.
I’ve always found it odd that the theropod body form has not reemerged. Larger toothed two legged creatures with long tails. They may well have survived for longer, but considering how rare fossils are, there might well be fossils buried deeper or even in the sea floors. We only see a small section of. Life in the fossil record.
I think large flightless birds over the eons probably have effectively filled that niche and blocked other reptiles from evolving to fill it. Also, there is the barrier of current reptiles once again evolving luke-warm-bloodedness to find the theropod form advantageous then warm-bloodedness to make it really take off.
Small generalists more than likely survived much longer. We know that's how birds survived. There ought to have been non-avian dinosaurs that filled that niche but weren't quite birds.
Agreed. If a small furry flightless mammal could survive the impact, so could a feathery non avian Dino. The latter lost out to post-apocalyptic competition
Look, most birds died out in the KT event, including small sized groups like Enantiornithes. There's just no way a small non-avian dinosaur survive, since they're larger
@@Carlos-bz5oo Dinosaurs were pretty diverse, and the chilling effect didn't affect every part of the world equally. Crocodilians weren't killed off by the Chicxulub Impact, so a few dinosaur species could have lasted in certain areas. Islands in equatorial regions located outside the Americas would have fared the best, since they experience the least temperature variation, thanks to the relatively constant angle of the sun's rays. We've seen this effect with modern climate change, where impacts so far have been less than a degree (celsius) in equatorial coastal regions, while high-latitude continental arctic regions have already warmed by over 5C. Around the time of the Chicxulub Impact, the mountainous islands north of Indian continent (now a part of the Himalayas), were insulated by hundreds of miles of deep ocean, were likely protected from the tsunami, and experienced a climate similar to Santa Barbara, California during the asteroid winter, even while equatorial continental regions in Africa and the Americas experienced frosts that would've killed most cold-blooded animals. On a more speculative note, only 800,000 years after the impact, the Deccan traps had a major super-volcanic eruption, so if that region were the last roaming ground of dinosaurs, such an eruption could easily have finished them off.
I wonder if any relict non-avian dinosaur populations survived a couple hundred thousand or even million years into the Paleocene… It’s unlikely, but fun to speculate nonetheless.
yes, there could be pockets of land that somehow sheltered them, like if you were in a deep ravine, maybe you only got hot and dusty, then were able to squeak out a living
It's not impossible, for example, Choristoderes survived up untill roughly 11 million years ago, yet not long ago it was believed that they went extinct alongside the non-avian dinosaurs 66 million years ago.
@@pauls5745clearly the survivors are small sized generalist like some sort of troodontid or pachycephalosaur, yet because of some reason like very small founding population or other factors they wont bring another dynasty.
A few years back it was discovered that New Zealand is actually it's own continent that has mostly sunk below the ocean, but would have been at the surface during the Mesozoic. A few fossil teeth that MIGHT be dinosaur teeth have been recovered from the ocean floor there and were dated to the Eocene if I remember right. This now sunken continent would have been the best possible place for dinosaurs to survive, as it was pretty much on the opposite side of the planet from the meteor impact. Then of course being driven to extinction as the island continent sank.
Yeah wasnt there a population of whooly mammoths that survived on some island up to the time the pyramids were built? I imagine stuff like that happened with the dinosaurs too...imagine a mammal dominated world where on some island somewhere the last non avian dinosaurs lived, only some dozens left
I think that if non avian dinosaurs were able to survive it would likely be in the southern hemisphere, it was autumn for them at the time so they would already be preparing for winter. Antarctica seems the most likely to me as they would already be able to deal with long amounts of darkness.
There is a cryptid theory that a species of dinosaurs survived in South America actually, but according to the theory they evolved into a tiny pygmy version
@@gringusgamingand the rest of the theory? What do they claim happening of that relic dwarf population, considering nothing like that existing right now there?
@@thenoobprincev2529 dude idk its a cryptid theory those usually are not true and most of the time when they are it isnt even a new species its just like some deformed coyote or something. A damn wampus beast is basically just an overweight mountain lion lolol
Holy crap, what an edgy and original comment! You must be the edgiest edgelord whoever edgeed edginess. 😂😂😂 Tell me, does it hurt to be so desperately edgy?
I cannot understate how happy seeing feathered birdlike dinosaurs makes me. Literally THIS is what they looked like! How else could they have evolved into what birds look like now if they just looked like big reptiles
I imagined some small theropod generalist would have been able to survive 33 thousand years post impact. Just can’t seem to understand why they didn’t bounce back when there was plenty of generalist dinosaurs that were well below the weight limit
Bears and cats. It’s unfair how good cats are. And they’ve won every matchup for 66 million years and counting. Dinosaurs, land crocs, hyaenodons, degenerate dinosaurs, entelodonts… No wonder they’re so arrogant. And bears are not only amazing generalists, but figured out parenting and intelligence needed to outwit and outadapt anything.
@@Mortablunt that has nothing to do with my comment, and cats never existed after a mass extinction. Nor would they be able to compete with theropods. The biggest cats barely tipped the scales at 1k lbs Midsized theropods dwarf that
Probably mammals and others were better and faster at diversifying and so on than the dinosaurs that survived. But dinosaur survivors found their way into the niches that birds fill today.
@@GODEYE270115 You're the one who said "small theropod generalist" which would compete with bears and cats, and I explained WHY they'd lose to the mammals. Don't throw out your back with those goalposts!
The topic of the K-Pg mass extinction event is super interesting. Even though the main idea of what happened is obvious, it’s the details that make it mysterious fascinating. More importantly it was one of the most dramatic and important events in our own evolutionary history. It’s like a bitter sweet ending to an epic story. Fantastical animals that had the legacy of 165 million years behind them having their story come to an abrupt and violent end that was drawn out slowly but surly to really hammer it in. To quote the Walking with Dinosaurs book version, “from all their myriad forms, only the birds survive as testimony to the agility and beauty of this mighty dynasty”.
@@oneshothunter9877 Agreed. I was going to quote Buddha saying “life is suffering”, but r/Buddhism says that he never said exactly that and that the word he did use in the relevant context, “dukkha”, has no good English translation.
Most likely. Those that were lucky, or rather unlucky, enough to survive the blast, the fires, the earthquakes and floods could have gone on for a few more days or maybe weeks, depending on how long they could go without food.
His relatives lived in other parts of the world. F.e. Zhuchengtyrannus and Qianzhousaurus ( both China), Nanuqsaurus (Alaska) , Alioramus (Mongolia) or Tarbosaurus (Asia).
Excellent video. I've often wondered if they survived past the Cretacious, and looked for articles and videos addressing that. Every other dinosaur documentary seems to believe that they didn't make it past the asteroid strike. This is the first I've found that addresses the possibility at length. Thanks again for pointing out the possibilities.
Note that it heated *the upper atmosphere* to oven-like temperatures. It did not heat the entire atmosphere to oven-like temperatures. The mechanism for setting fires on the ground would've been thermal radiation from plasma in the mesosphere directly to the ground. A good cloud layer is more than enough to prevent that.
@@Preston241 did something bad happen to you when you were a child around when you happened to see this movie? I am very sorry, if you want someone to talk to about it who will not judge go ahead and ask and I'll send you a telegram link.
It's sad to think that on some day in the ancient past, the last lonely non-avian dinosaur drew its final breath, unable to comprehend the absolute destruction that decimated its world and changed it beyond recognition.
Oddly enough, not a bot here haha just posted after seeing it super early and was half awake. Brain is less than steller at typing right after waking up haha
@@triton62674There aren’t large enough prey for predators to evolve to hunt. If you think about it, every continent, Prey aren’t that much larger than the predators. Only exeception are elephants but modern elephants are smaller than their ancestors.
@@georgie9303 now it's hard for big predators to evolve since humans are making it harder for animals to survive but who's to say big animals won't evolve again once humanity goes extinct
Yeah, there are "studies", which makes it sound a lot better than the honest description of "educated guesses". It's not like the fossil record is remotely close to being complete. I would honestly be surprised if all the non-avian dinosaurs were extinct 1000 years after the impact, which is, after all, just an instant in geological time. Maybe some survived in a situation analogous to the last mammoths and died out on an island. Maybe some small ones survived for millions of years, but we have just not found the fossils, and they were soon enough out-competed by mammals and birds.
A few years back it was discovered that New Zealand is actually it's own continent that has mostly sunk below the ocean, but would have been at the surface during the Mesozoic. A few fossil teeth that MIGHT be dinosaur teeth have been recovered from the ocean floor there and were dated to the Eocene if I remember right. This now sunken continent would have been the best possible place for dinosaurs to survive, as it was pretty much on the opposite side of the planet from the meteor impact. Then of course being driven to extinction as the island continent sank.
@@Devin_Stromgren Still, I don't think any surviving dinosaurs would have drowned. Maybe they would have run out of resources, but probably only if they were large -- but only smallish ones were likely to survive the KT extinction. But who knows? I could imagine some small generalist could have survived, but that would probably mean it would have an advantage over smaller mammals and birds and would have come to dominate the ecosystem -- which did not happen. So we would need a reason for the surviving generalist to die out. That could even be just bad luck; it's not always clear why one species thrives and a similar one dies out.
@@christosvoskresye Depending on just how small New Zealand got, just the metabolic needs of being warm blooded could have been the end for any surviving dinosaurs there. If I recall correctly, all birds and mammals native to the island only arrived after the sinking reversed.
I've always had one major question about this: how did any macroscopic life survive if photosynthesis was interrupted for 15 years? The supply of roots, tubers, and seeds would have been depleted by then... no matter how small the animals
A hypothesis that I've had for awhile is that the pressure wave ruptured the air sacs in any dinosaur larger than a dog. Any smaller and the pressure wave wouldn't have shrunk down enough to have gone through their respiratory system. Best example I can give is that it's easier to push a perpendicular sheet of paper through a hole the size of a plate, but do that with each subsequently smaller hole you will eventually get to a size that's larger than the thickness of 2 sheets yet won't be able to be pushed through the hole, not without moving the structure the hole is in. This would also explain why insects were hardly effected by the impact.
Pretty cool to think a dwarf tyrannosurid might have evolved from T. rex. Even still, prey was probably too small to sustain such a beast, or it could have been a mix of factors that drove the hypothetical dinosaur to extinction. Either way, we might share this era with non-avian dinosaurs 😁
We don't know. But my guess is that no non-avian dinosaurs survived for more than a few weeks. The aftermath's effect on the climate would have been the killer. IMO if any had made it much beyond that then their descendents would probably still be around.
@@carelgoodheir692I think it's possible they might have lasted a few years actually, though likely in tiny numbers and in isolated pockets. It's entirely possible a genetic bottleneck could have precipitated their end.
Like he said, changes in the environment. New animals would've evolved that could out compete the dinosaurs for food or even became their predators. Hell, at that point it could've even been new diseases that killed them off
Most people on here have no idea whatsoever what you're talking about. I remember it clearly. My first movie alone at the movie theater. It was a double feature. In the second movie The Creature from the Black Lagoon crashed a pool party which was attended by a lot of girls in bikinis. I was three and a half. Kids can't do that these days. I just realized I may be a dinosaur.
You know that would make for a pretty interesting and potentially educational video game. You play as one of several types of non-avian dinos (from several different regions) who must survive in the aftermath of the impact. See how long you last!
No, the whole system collapsed FAST. It just had to. Food chain, top to bottom, bottom to top, all gone. And the rocks prove it. They had a good long long run.
WAIT, we're taught ocean life IS more sensitive to environmental changes but the survival of terrestrial dinosaurs has less evidence or less support? You would think the geology would favor land over sea animals. This was really great start to my morning. Thank you Captain.
Oceangoing dinosaurs are far more likely to have been fossilized. They just need to die naturally anywhere with an unusually high sediment deposition rate so their bones last long enough to start mineralizing. On land they basically need to drown in a peat bog or be buried by a landslide, or their bones will be cracked open by scavengers for the marrow. Our best fossil of one land dinosaur species (I forget which one) actually comes from an ocean sedimentary rock. The hypothesis is it drowned in a river, was swept out to sea, floated for a few days/weaks due to bloating as it rotted, then sank in the deep ocean once it exploded from gas buildup. It landed upside down in mud which was rapidly covered, so now we have a perfect imprint of the spines and armor on its back as a fossil.
Hmmm yes and no. The land has less biodiversity on it in general compared to the ocean. So if had a major climate change. Most of life on land would be gone but the ocean would still have double or triple the amount of life compared to land. You also have to think 2/3 of the earth is water not land and water itself acts a barrier similar to how the earth is to space. So basically you can say the ocean is a planet inside a planet.
You have to factor at the same time that this impact happened the deccan traps had been spewing lava and poisonous clouds of ash for over 500,000 years leading up to this event.
From Alberta here. I'm glad you mentioned our province and its significance to that time frame. We have the most diverse dinosaur life in the world, from what I hear. I think in that time period, Alberta was an island. I could be wrong on that
If you had all those giant dead dinosaurs, the amount of insects and maggots would have been enough to keep smaller dinosaurs going for years. The lack of photosynthesis could have been completely overcome by feeding on insects and scratching up seeds.
considering that: 1. the "age of reptiles" was probably a result of post-Permian environmental factors; 2. entire biomes of Dinosauria had successfully adapted to arctic environments well before the end of the Cretaceous; and 3. post-Mesozoic terror birds failed to compete with American mammals, it is highly possible that non-avian Dinosauria did survive quite some time after the asteroid and the traps before being out-competed by migrating, faster generational mammals...
No! The terror birds did NOT become extinct because of competition with American mammals. They declined in the Miocene and in South America only a small genus, Psilopterus, survived into the Pleistocene. And in North America, the Titanic successfully coexisted with mammals for more than 3 million years.
Considering how there are unconfirmed sightings to this day of dinosaur like creatures such as the Pterosaurs of New Guinea, the Arica Monster, The Loch Ness Monster, and the Mokele Mbembe I do believe that a very small population of Dinosaurs managed to survive the extinct event, but slowly some species became extinct after the extinct event due to the lack of food and resources.
I don't understand why nobody gives those fossils from New Mexico any credit. Judging from what you said they have a pretty solid alibi (imo) for the major criticism of their methodology. Like yeah, it sounds unlikely and doesn't seem to fit with our current understanding of things, but that's how our understanding of a topic evolved. By explaining unusual phenomena, not just ignoring them.
I love the use of American measurements in this physics video "28 times the speed of an AK bullet", "10 billion Hiroshima's.", all common SI units, lol.
Jesus...birds are dinosaurs. They happened to develop flight, and were relatively, small, which helped. Look up a cassowary, native to Australia. Those are basically small dinosaurs, of the "old school" variety.
Imagine they‘d had survived in some area just barely and had survived. Imagine Columbus finding not india as he intended but a continent of dinosaurs with actual T-Rexes. Probably completely impossible due to the dectonic plates but very interesting
We need a follow-up video on why the 2013 findings are considered not valid. What was the quality of the actual research and why did it get so much pushback
I mean if they did survive they were probably wiped out by mammals poaching the eggs out of their nests. Then the ones that survived that and evolved into modern birds were the ones that built nests off the ground high up in trees avoiding the egg snatching.
It's really difficult finding information about this thanks for posting. I once read one population of dinosaurs seemed to exist up to forty thousand years after the event and I've always been very interested in finding out more.
0:12 Which type of AK cartridge are we talking about? 7.62×39mm or 5.45×39mm? 7.62×39 has less muzzle velocity than the 5.45×39mm (2,300 fps ~ 2,600 fps) due to it being heavier.
A "drop of 36° F or 20 °C" is a decrease of the same amount. If you decrease a temperature from 68°F to 32°F, it is exactly the same as dropping it from 20°C to 0°C.
This got me thinking that if we are living through a major extinction event, it is always possible that a small number of humans will luckily survive the effects of climate collapse (if it comes to the ultimate effects).
"28x AK's bullet" is a measurement i never expected
Freedom units
But yet exactly the metaphor I needed
@@triton62674opposite
They weren't even the last group of dinosaurs who couldn't handle the metric system.
Very useful because of course everyone knows the velocity of an AK's bullet.😀
The gradual decline of smaller pockets of dinosaurs post-asteroids is a sad prospect to try to picture; rare beasts just keeping on going, and persisting on in spite of their situation. A few images I remember from older documentaries still stuck with me: a recently hatched baby Alamosaurus wandering a bone graveyard of adults, and a lone raptor waiting under shelter from the snow, uncertain of its own future in the long winter.
On the flip side at least, the fact that smaller creatures and plants still survived such a cataclysmic event and subsequent winter is always impressive to me.
The meek shall inherit the earth
Were those documentaries "The last day of the Dinosaurs" by FD ancient history and "Dinosaur Revolution"?
A majority of raptor species are actually much much smaller than what you see in Jurassic Park. And this is just my Personal theory, but I think a bit of them probably survived. Given that we see a lot of small lizards today
@@AnthonyDoesUA-cam Small lizards are actually in an entirely different clade than dinosaurs and the surviving dinosaurs actually evolved into bird (Which makes birds reptiles which is pretty cool)
@Unimportant_egg yes but crocs, sharks, squid, plenty of other large megafauna also survived and thrived past the dinosaurs
Since nobody knows what day the Dinosaurs died, I'll drink everyday in case one of these days is the anniversary
@@Randomaccount-l4q nuh uh
@@Randomaccount-l4qdo you even know what a bot is
Bro, what are you talking about. We all know it was March 3rd
Apparently there was a study not too long ago where they found pollen in the bottom of a lake dating back to the asteroid impact. The pollen indicated that it was spring time when the asteroid hit
Land Before Time: The Quest For Cirrhosis...
As an American, I thank you for relating something to the speed of a bullet so that I can understand how fast things move.
AK-47’s are Russian, I prefer to measure in M1 Garand and M16 rounds
Superman
@@VenatorPaleo I think they were referring to the guns = american stereotype
🦅
@@VenatorPaleowe don’t care where the gun is made. We like guns equally here.
Finally a video that is not just like "Birds are dinosaurs so they actually survived till today" but answering the question of how long dinosaurs that we associate as being dinosaurs actually survived.
You don't associate birds with dinosaurs? That's odd.
@@lonestarranger833They can be associated with them as they evolved from them but 99% of people will never group them with Dinosaurs.
And yet all you'll get is guesses and word salad
@lonestarranger833 Not as odd as your inability to read. American, are you?
@@lonestarranger833not the same anymore, it's like associating humans with amphibians because we evolved from them
India was a long way from the impact site, and had a tropical climate that might have made it easier for non avian dinosaurs to pull through, had the Deccan traps not erupted. That's an interesting alternate history to consider, imagine a dinosaur dominated ecosystem continuing while mammals take over the rest of the world as in our timeline, only for the two worlds to meet when India finally collided with Asia
That's a crazy thought experiment!
The continents weren’t where they are now when the asteroid hit. It was fairly soon after Pangaea broke up that the asteroid hit. The area where the impact happened is now the Yucatan peninsula, in Mexico. It moved there through plate tectonics. Earth looked nothing like it is now. And it’s still changing. Look at Iceland! That planet is being torn apart by plate tectonics. It’s a continuous and uncontrolled action. 🇨🇦🇨🇦
I think that’s a scenario being worked on by Joschua Knuppe
@@pastlife960 A book?
It's possible a similar event MIGHT have actually happened in the real world, minus the continental collision. A few years back it was discovered that New Zealand is actually it's own continent that has mostly sunk below the ocean, but would have been at the surface during the Mesozoic. A few fossil teeth that MIGHT be dinosaur teeth have been recovered from the ocean floor there and were dated to the Eocene if I remember right. This now sunken continent would have been the best possible place for dinosaurs to survive, as it was pretty much on the opposite side of the planet from the meteor impact. Then of course being driven to extinction as the island continent sank.
It's depressing thinking that non avian dinosaurs still endured the apocalypse thousands of years after the asteroid hit and were so close to surviving into the paleogene, but simply weren't lucky enough
@@Randomaccount-l4q attention seeker
@@Randomaccount-l4qattention seeker (the sequel)
The wholesome thing is that they at least endured for some time longer.
@@user-xl4vm3tt5e and that just makes it more depressing rather than wholesome
Just think of all the times we Homo sapiens nearly did not escape extinction.
It’s kinda sad to think about, but at one point, there was only a single dinosaur left on the entire planet. And I don’t mean birds, I mean what you think of as a dinosaur
Rest in piece last Dino
ironically surrounded by birds
R.I.P. Denver
Unless the last two non-avian dinosaurs had a suicide pact? Or tumbled off a cliff while fighting each other...
@@stephenderry9488 2 Bros doing one last think together 😔
The biodiversity loss continued for 30,000 years after the impact, if that gives you any idea of how the more resilient species struggled after the downturn.
That’s an imaginary number.
@@bigmike7385 If benderlsgreat had put "might easily have" between the words "loss" and "continued" I'd maybe have given his post a thumbs up.
@@bigmike7385 If you want the real number, it's 30,129 years, 42 days, 3 hours and 29 minutes.
Crocodiles and sharks be like this meteor is nothing
I must be quite old. I think i recall seeing a live one on tv as a kid. Was purple and used to sing and tell me he loved me.
Ah yes, Barney 😂
You think that makes you old? I used to do everything I could to stop seeing that thing.
_ooh Barney’s in 30 minutes. Hey kids let’s watch a movie!_
@@madtabby66 Two plus two is four. Two plus two is four.
I heard Barney went extinct during the Thanksgiving Day Parade of 1997.
You are not old, all the videos of that one were found with the fossils.
The ancestors of all modern birds where metal AF for surviving all of this.
Same as our ancestor for surviving this.
@@FirstDagger Yeah but mammals could just burrow underground and stay there. how many avians could do that?
@@noterrormanagement Avian dinosaurs could have used mammalian or reptilian burrows. Also there are several bird species that burrow. The commonality is that small species survived on land.
@@noterrormanagement alot, technically birds were widespread and had millions of years to evolve by then. Whales went from land dweller to the massive whales in less time than the first avian dinosaur to the late cretacious. Many species died but I am sure there were small species and burrowing species by then
All animals that survived were.
I see some dinosaurs flying outside my window right now.
saw one too earlier
Although evolution split birds and dinosaurs, they are their close relatives, thecnicaly not a dinosaur
@@Tyrantrum858 False, birds are technically dinosaurs, just as mammals, birds, reptiles, and amphibians are all technically fish.
No you don't
@@Randomaccount-l4q says the person with a fake profile and no picture
I went to a site in Poland where the KPG boundary is preserved, and what's funny about the site is that you can find perfectly preserved Belemnites a good 30-50 centimetre above the boundary, even though it's a carbonate formation where the sedimentation was obviously much slower after the KPG event.
It is possible these are redeposited, but the one I got from there is so prestinely preserved you can still see the imprints of blood vessels on the Belemnites shell. So this was likely a 'Dead clade walking'. one of the, if not The, last species of a clade that survived the extinction event, but eventually was out competed in the new world that followed.
I think ammonites are confirmed to have limped into the earliest Paleogene, so it’s possible!
Yeah. I get it, scientists are human too, and they have human psychology, which makes them seek social validation. They don't want to be seen as the loony scientist that thinks people rode dinosaurs, which is what normies imagine when you say dinosaurs survived for a half million years (or longer) after the extinction event, but I think there could be something in the Colorado paleontologists' study. How many times have scientists been told something is true and clung to their "scientific" dogma only to find out, "surprise! Turns out you have free mitochondria in your blood."
W Polsce budowaliśmy z wapienia całe zamki, pałace i mury miejskie. I sporo z nich stoi do dziś a na fragmentach skał widać amonity. Rejon ten to Jura Krakowsko-Częstochowska
A lot of preserved genetic material has now been recovered from dino fossil like collagen indicating some may have survived untill very recently. Many peer reviewed studies. Being ignored or suppressed. Doesn't help being promoted by religious conservatives. So prob need to check this info out properly.
Where in Poland is the site located?
“At speeds 28x greater than that of an AK-47 bullet.” Americans will use anything except the metric system lol
I was looking for this comment, though more because it's so out of pocket
Don’t expect too much out of Americans lol.
We don’t use the AK-47 so I don’t understand it
We don't use AK's? But I'm glad we live rent-free in foreigners heads
Technically the AK is metric, so...
It seems like the K-T extinction was far more devastating,almost completely wiping out entire orders of animals(archosauria, coleoidea, pan-testudines,holostei, sarcopterygii), while during the permian-triassic extinction it seemed like a lot more orders survived, and only orders on the decline like eurypterids or trilobites were finished off. Whats very wierd is how small generalist animals tend to survive mass extinctions, as this applies to synapsids during both the P-T and K-T extinctions, but when it comes to diapsids, mostly highly specialized species(birds, snakes, crocodiles) seemed to have survived, while most generalist diapsids, especially those belonging to archosauria were wiped out.
8:56 i was not ready for this amount of cuteness
Was so confused at first because I saw one dino attacking another before the clip showed up 🤣
@@garg4531 lmao yeah i meant the pygmy hippo baby, the timestamp might be half a second or a second off :D
@@garg4531lol same. Each to their own 😅
@@garg4531 same lol the baby hippo made it funny
baby hippos are ridiculously cute
We need to remember that the fossil record gives us a very incomplete picture of Earth’s deep past. It’s very likely that a few populations of non-avian dinosaurs held out for a while and ultimately lost out to new competition.
Correct. The fossil record is a series of snapshots of catastrophes. What happens between such incidents remains a mystery.
@@martinharris5017 and worse, it's extremely strongly biased towards lowland habitats with standing water. We will never know what the mountain fauna & flora looked like.
You are mixing up the notions of "possible" and "likely". The fossil record is incomplete by definition but that doesn't mean everything we can imagine "likely" existed. Given the global effects on atmosphere and biosphere it's not likely at all that large dinosaurs survived the end of food availability for more than a year or so.
@@MrDael01 You’re operating under the assumption that all non-avian dinosaurs were big. I say likely because things are rarely so clean cut black and white.
life survived in the oceans and bellow the earth.
I doubt any bird survived at all.
this made me feel really sad for all the dinos. imagine how scared they would've been :(
lol
@@shoechew Don't be mean.
@@greywolf7577exactly. Pretty awful for these creatures.
if you wanna cheer yourself up think how many millions of years they got to be around.
@@MeelisMattyes, just really bad timing for the ones who happened to exist at the time of the asteroid impact!
"The Road" but with dinosaurs. Hatchlings traveling through the post apocalypic world to get to the US Southwest could actually be a good story. Dark "Land Before Time".
Perhaps come to understand where "the past" actually takes place.
I mean that is basically the plot of The Land Before Time
@@nwahnerevar9398 Time is eternal, so better quit your childish fantasies.
@@rajarsi6438what the fuck is your problem
@@rajarsi6438Are you a bot? Like, your response legitimately feels ai generated.
4:40 this image makes me lose it everytime
Calm down Virgin
They do be getting absolutely *LAUNCHED* tho fr
ppl when the ps5 was revealed to have 69 terashits per megafart
Bro they got thrusted into to the air, fuckers couldn’t have seen it coming 💀
@@SpaceBattleshipYamato-ps2jc frfr 💀
It would not surprise me at all if there were several species of non-avian dinosaurs that prospered after the KT impact, but whose luck/adaptability ran out a few (hundred thousand? million?) years later.
Hard to ponder maybe it was only thousands of years…
Million is probably impossible. At that point you'd see it not only in the fossil record but you'd likely have seen dinosaurs adapt into new post KT kinds of dinosaurs. For reference Neanderthals appear in the fossil record 800K years ago at the oldest theorized.
@@calvinware7957 You are assuming that 'existing' means 'will be fossilized'. A species not appearing in the fossil record for several million years is not at all unusual. The image of the past that the fossil record provides is so low-resolution that 'absence of evidence' is not at all 'evidence of absence'.
@@qwertyuiopgarth for dinosaurs to exist in enough number to sustain themselves for a million years you would eventually find a fossil.
@@calvinware7957 Nope. That is not at all guaranteed. Only a very small percentage of creatures get fossilized. Once again, absence of evidence is NOT evidence of absence. It may convincingly persuade someone that it isn't there, but it is not evidence that a particular species is not there. "Likely" and "definitely" are two entirely different things.
For the ammonoids, I remember hearing one video saying that they persisted for a good while after the extinction event, but slowly disappeared with the rise of certain sea mammals (which were able to prey them out of their shells in a way that marine reptiles couldn’t) - everywhere they arrived, the ammonites disappeared, with only the nautilus remaining in the one region they didn’t colonize
If this is the case then it’s amazing for me to think that if things had been just a little different, they might still be around to this day (at least until humans come along and hunt them into extinction)
Edit: According to a couple comments I’m confusing ammonoids with nautiloids, which I thought were the only surviving members of their lineage due to them both being shelled cephalopods, but I assume they’re actually separate lineages.
Either way, the idea mentioned earlier is still interesting to think about; how if things had been different they might still be around, at least for a time
You are probably mistaking ammonites with the decline of the nautilus itself, since ammonites went extinct alongside the dinosaurs.
"(at least until humans come along and hunt them into extinction"
Self hate is as pathetic as it is ugly.
@@malcontender6319 Yeah because humanity has had an excellent track record. Grow up.
As a prior commenter mentioned, you’re probably mistaking ammonoids for nautiloids (if I know what video you’re talking about, I watched it too; it was about the nautiloids). Ammonoids like Sphenodiscus did persist, but only for a very short time; it’s thought that the sheer volume of plankton that died in the extinction event killed off both their food source and their offspring, leaving their populations irreparably damaged and barely drifting onward for the earliest Paleocene.
@@malcontender6319 I’m just saying that it’s very likely. Ammonoids are very slow and so very easy for us to catch with nets, etc., then it’s a simple matter of using tools to pry them out of their shells, meaning as we started hunting them we’d have a huge impact on their population and they probably wouldn’t be able to adapt quickly enough before going extinct or at least suffer from a major decline in their numbers and diversity.
0:16 10 billion Hiroshima’s is insane
Hiroshimas. Stop adding an apostrophe unless it's possessive. It makes you look foolish.
Stop condescendingly pointing out minor grammatical errors that don't impact the comprehensibility of the sentence, it makes you appear pretentious rather than intelligent. @@javiermoretti1825
@@javiermoretti1825you’re one to talk 😭
Ten billion hiroshimas.
Coming soon again, thanks to this fraudulent war in Ukraine and the mindless leadership in the West, thinking anyone can win a nuclear war!
Coelacanth was around BEFORE the dinosaurs, survived the Dino extinction, and still swims in the sea to this day. Thought to be extinct until one was caught in 1938. The REAL grandpa veteran of the planet.
Correct. There's a beauty in the survivors DNA and effective design, that haven't changed much in 300 million years...crocodiles, dragonflies, horseshoe crabs, coelacanth, etc.
4:00 I noticed you said some dinosaurs survived “15 years after D-Day”! It was never the same after Normandy! 😂
They were collaborators!
I’ve always found it odd that the theropod body form has not reemerged. Larger toothed two legged creatures with long tails. They may well have survived for longer, but considering how rare fossils are, there might well be fossils buried deeper or even in the sea floors. We only see a small section of. Life in the fossil record.
I think large flightless birds over the eons probably have effectively filled that niche and blocked other reptiles from evolving to fill it. Also, there is the barrier of current reptiles once again evolving luke-warm-bloodedness to find the theropod form advantageous then warm-bloodedness to make it really take off.
under antartica
Terror birds are literally the theropod body plan reemerging, within theropods no less.
Terror birds
@@Player-pj9kt no long reptilian tail.
Washington DC has the last known population of dinosaurs left.
And they’re not going anywhere.
Obviously, you’re not aware of all the retirement HOA’s up and down the east coast.
Ha ha
John the Triceratops hates attention man, why are bringing attention to him.
The turtle takes offense
Honestly, it doesn’t sound impossible for a small raptor to survive a good deal
Small generalists more than likely survived much longer. We know that's how birds survived. There ought to have been non-avian dinosaurs that filled that niche but weren't quite birds.
Agreed. If a small furry flightless mammal could survive the impact, so could a feathery non avian Dino. The latter lost out to post-apocalyptic competition
Look, most birds died out in the KT event, including small sized groups like Enantiornithes. There's just no way a small non-avian dinosaur survive, since they're larger
@@Carlos-bz5oo Dinosaurs were pretty diverse, and the chilling effect didn't affect every part of the world equally. Crocodilians weren't killed off by the Chicxulub Impact, so a few dinosaur species could have lasted in certain areas.
Islands in equatorial regions located outside the Americas would have fared the best, since they experience the least temperature variation, thanks to the relatively constant angle of the sun's rays. We've seen this effect with modern climate change, where impacts so far have been less than a degree (celsius) in equatorial coastal regions, while high-latitude continental arctic regions have already warmed by over 5C.
Around the time of the Chicxulub Impact, the mountainous islands north of Indian continent (now a part of the Himalayas), were insulated by hundreds of miles of deep ocean, were likely protected from the tsunami, and experienced a climate similar to Santa Barbara, California during the asteroid winter, even while equatorial continental regions in Africa and the Americas experienced frosts that would've killed most cold-blooded animals.
On a more speculative note, only 800,000 years after the impact, the Deccan traps had a major super-volcanic eruption, so if that region were the last roaming ground of dinosaurs, such an eruption could easily have finished them off.
Probably would have shrunk into a reptile looking chicken
I have it on good authority that Littlefoot and friends are STILL singing songs and having fun in the Great Valley.
The Land Before Time 63 - Littlefoot's home hospice adventures
I understand that Mammoths were still walking around after the Pyramids were finished. Lions were living and thriving in Alexander's Mesopetania
Except mammoth weren’t dinosaurs.
@@monkeh86 but you're a mammoth
@@chombus2602 true
What about the Saber toothed Mongoose?
I wonder if any relict non-avian dinosaur populations survived a couple hundred thousand or even million years into the Paleocene…
It’s unlikely, but fun to speculate nonetheless.
yes, there could be pockets of land that somehow sheltered them, like if you were in a deep ravine, maybe you only got hot and dusty, then were able to squeak out a living
It's not impossible, for example, Choristoderes survived up untill roughly 11 million years ago, yet not long ago it was believed that they went extinct alongside the non-avian dinosaurs 66 million years ago.
@@pauls5745clearly the survivors are small sized generalist like some sort of troodontid or pachycephalosaur, yet because of some reason like very small founding population or other factors they wont bring another dynasty.
A few years back it was discovered that New Zealand is actually it's own continent that has mostly sunk below the ocean, but would have been at the surface during the Mesozoic. A few fossil teeth that MIGHT be dinosaur teeth have been recovered from the ocean floor there and were dated to the Eocene if I remember right. This now sunken continent would have been the best possible place for dinosaurs to survive, as it was pretty much on the opposite side of the planet from the meteor impact. Then of course being driven to extinction as the island continent sank.
Yeah wasnt there a population of whooly mammoths that survived on some island up to the time the pyramids were built? I imagine stuff like that happened with the dinosaurs too...imagine a mammal dominated world where on some island somewhere the last non avian dinosaurs lived, only some dozens left
I think that if non avian dinosaurs were able to survive it would likely be in the southern hemisphere, it was autumn for them at the time so they would already be preparing for winter. Antarctica seems the most likely to me as they would already be able to deal with long amounts of darkness.
if not the conditions, then the food supply not enough for anything big. many more passed from starvation
Tbf I never did say anything about the bigger Dino’s, I was more so thinking about the smaller ones like small ornithischians and theropods
There is a cryptid theory that a species of dinosaurs survived in South America actually, but according to the theory they evolved into a tiny pygmy version
@@gringusgamingand the rest of the theory? What do they claim happening of that relic dwarf population, considering nothing like that existing right now there?
@@thenoobprincev2529 dude idk its a cryptid theory those usually are not true and most of the time when they are it isnt even a new species its just like some deformed coyote or something. A damn wampus beast is basically just an overweight mountain lion lolol
I was there. It was rough and if I didn’t have my umbrella I would have gone with them.
Holy crap, what an edgy and original comment! You must be the edgiest edgelord whoever edgeed edginess. 😂😂😂
Tell me, does it hurt to be so desperately edgy?
@@slappy8941cringe.
@@slappy8941how is op's comment edgy?
@@slappy8941 Tf? 😿
LMAO
I cannot understate how happy seeing feathered birdlike dinosaurs makes me. Literally THIS is what they looked like! How else could they have evolved into what birds look like now if they just looked like big reptiles
I imagined some small theropod generalist would have been able to survive 33 thousand years post impact. Just can’t seem to understand why they didn’t bounce back when there was plenty of generalist dinosaurs that were well below the weight limit
Bears and cats.
It’s unfair how good cats are. And they’ve won every matchup for 66 million years and counting. Dinosaurs, land crocs, hyaenodons, degenerate dinosaurs, entelodonts… No wonder they’re so arrogant.
And bears are not only amazing generalists, but figured out parenting and intelligence needed to outwit and outadapt anything.
@@Mortablunt wait what? Sorry buddy but cats nor bears existed in the earliest paleogene nor just after a fricking mass extinction.
@@Mortablunt that has nothing to do with my comment, and cats never existed after a mass extinction. Nor would they be able to compete with theropods. The biggest cats barely tipped the scales at 1k lbs
Midsized theropods dwarf that
Probably mammals and others were better and faster at diversifying and so on than the dinosaurs that survived. But dinosaur survivors found their way into the niches that birds fill today.
@@GODEYE270115 You're the one who said "small theropod generalist" which would compete with bears and cats, and I explained WHY they'd lose to the mammals. Don't throw out your back with those goalposts!
What killed the Dinosaurs? The ICEAGE!
Yes, it's the Arnold reference.
CHILL! FROSTY! ALLOW ME TO BREAK THE ICE!
Let's kick some ICE.
Or... global warming!
What killed the Dinosaurs?
ME! *Bzzz Bzzz Bzzzzz*
*ITS NOT A TUMOR*
There could have been other pockets of dinosaur survivors. We just haven't found them, or not realized what we have found yet.
Yes, some invincible super dinos that were able to burrow deep into the earths core, and are still living there today 😂
The topic of the K-Pg mass extinction event is super interesting. Even though the main idea of what happened is obvious, it’s the details that make it mysterious fascinating. More importantly it was one of the most dramatic and important events in our own evolutionary history. It’s like a bitter sweet ending to an epic story. Fantastical animals that had the legacy of 165 million years behind them having their story come to an abrupt and violent end that was drawn out slowly but surly to really hammer it in. To quote the Walking with Dinosaurs book version, “from all their myriad forms, only the birds survive as testimony to the agility and beauty of this mighty dynasty”.
"Optimistically, some even say they lasted for just over 30,000 years."
Crocs: Are we a joke to you?
Mammals and dinosaurs: Yes!
Crocs ain't dinosaurs. They're legsnakes.
Crocs and alligators are not dinosaurs.
Also sharks existed long before the dinosaurs and obviously survived. But will they survive us humans?
Felt bad for the juvenile triceratops.
I feel bad for all of them 😢
@@Sylbester_ Agreed. So much suffering.
That's life.
Just like nature today.
@@oneshothunter9877 Agreed. I was going to quote Buddha saying “life is suffering”, but r/Buddhism says that he never said exactly that and that the word he did use in the relevant context, “dukkha”, has no good English translation.
I wonder how long T. rexes survived after the impact. Probably all gone within 10 hours since they were north american
Most likely. Those that were lucky, or rather unlucky, enough to survive the blast, the fires, the earthquakes and floods could have gone on for a few more days or maybe weeks, depending on how long they could go without food.
His relatives lived in other parts of the world. F.e. Zhuchengtyrannus and Qianzhousaurus ( both China), Nanuqsaurus (Alaska) , Alioramus (Mongolia) or Tarbosaurus (Asia).
@@lanzknecht8599most of these were proabably already gone before the impact
They were also so big, so I don’t think they make it long after the impact
Excellent video. I've often wondered if they survived past the Cretacious, and looked for articles and videos addressing that. Every other dinosaur documentary seems to believe that they didn't make it past the asteroid strike. This is the first I've found that addresses the possibility at length. Thanks again for pointing out the possibilities.
Note that it heated *the upper atmosphere* to oven-like temperatures. It did not heat the entire atmosphere to oven-like temperatures. The mechanism for setting fires on the ground would've been thermal radiation from plasma in the mesosphere directly to the ground. A good cloud layer is more than enough to prevent that.
"28 times greater than that of an AK-47 bullet"
HEY, no Russian measurements. American only.
"10 billion Hiroshimas"
That's better.
How many exploding Coke cans is that?
A dwarf T-Rex certainly sounds wonderful. WHOOOSAGOODLILTREXXXXX
Nanotyrannus is a real thing
@@BarrengerFynar I'm pretty sure they're classifying nanotyranus as a juvenile of a bigger tyrannosaur now, so it may in fact not be a thing.
@@Devin_Stromgren I've heard evidence both ways...I think at this point there is nothing conclusive either way.
Raahh!
Dinosaurs when they cannot hide from the meteor: guess I'll die
I'm really sorry to be that guy... But... Meteor.
@@AftabLokhandwalahe meant mentor, some mentors like to take advantage of their protégés.
No way!
It's the freaking great valley where dinosaurs lived another half million years!
until they die of starvation when they eated all the vegetation
Flashbacks to childhood trauma. But that movie slapped.
@@Preston241 did something bad happen to you when you were a child around when you happened to see this movie?
I am very sorry, if you want someone to talk to about it who will not judge go ahead and ask and I'll send you a telegram link.
Good old times. No internet, no smartphones, just dinosaurs livingn't the moment.
It's sad to think that on some day in the ancient past, the last lonely non-avian dinosaur drew its final breath, unable to comprehend the absolute destruction that decimated its world and changed it beyond recognition.
I am a simple man. I see an extinct zoo and I click! Another super jnteresring topic about dinos!
@@Randomaccount-l4q Bro just stop spamming bot at everyone who saw the video this early.
@@suddieo1It's cuz it's a bot. A bot bot.
Oddly enough, not a bot here haha just posted after seeing it super early and was half awake.
Brain is less than steller at typing right after waking up haha
I am a sheepish man
i always believed that they survived for a few thousand up to a million years after the impact.
To add insult to injury, it's unlikely that this planet will ever have terrestrial species as big as the Non Avian Dinosaurs and Pterosaurs.
Why
Maybe concentration of oxygen in the air is much lower @@Player-pj9kt
@@triton62674There aren’t large enough prey for predators to evolve to hunt.
If you think about it, every continent, Prey aren’t that much larger than the predators. Only exeception are elephants but modern elephants are smaller than their ancestors.
@@georgie9303 now it's hard for big predators to evolve since humans are making it harder for animals to survive but who's to say big animals won't evolve again once humanity goes extinct
Im sure I’ve seen some that have come close to their size, in and around McDonalds and KFC.
Top problem with the Dino extinction is that such a scenario would not fossilize them.
When I was a kid, it was 65 million years ago. Damn! Has it been a million years already? Where does the time go?
"When I was a kid, it was 65 million years ago"
I think you're joking, because the oldest human verified only lived to be 122 years old.
No, he really is that old, look him up on google@@codyeaster290
I would love to hear big Sauropods survive another million years
Thumbnail goes immensely hard
Yeah, there are "studies", which makes it sound a lot better than the honest description of "educated guesses". It's not like the fossil record is remotely close to being complete. I would honestly be surprised if all the non-avian dinosaurs were extinct 1000 years after the impact, which is, after all, just an instant in geological time. Maybe some survived in a situation analogous to the last mammoths and died out on an island. Maybe some small ones survived for millions of years, but we have just not found the fossils, and they were soon enough out-competed by mammals and birds.
A few years back it was discovered that New Zealand is actually it's own continent that has mostly sunk below the ocean, but would have been at the surface during the Mesozoic. A few fossil teeth that MIGHT be dinosaur teeth have been recovered from the ocean floor there and were dated to the Eocene if I remember right. This now sunken continent would have been the best possible place for dinosaurs to survive, as it was pretty much on the opposite side of the planet from the meteor impact. Then of course being driven to extinction as the island continent sank.
@@Devin_Stromgren It never sank all the way, which is why we still have the tuatara.
@@christosvoskresye Yes, although it supposedly sank further than it is now before reversing direction.
@@Devin_Stromgren Still, I don't think any surviving dinosaurs would have drowned. Maybe they would have run out of resources, but probably only if they were large -- but only smallish ones were likely to survive the KT extinction. But who knows?
I could imagine some small generalist could have survived, but that would probably mean it would have an advantage over smaller mammals and birds and would have come to dominate the ecosystem -- which did not happen. So we would need a reason for the surviving generalist to die out. That could even be just bad luck; it's not always clear why one species thrives and a similar one dies out.
@@christosvoskresye Depending on just how small New Zealand got, just the metabolic needs of being warm blooded could have been the end for any surviving dinosaurs there. If I recall correctly, all birds and mammals native to the island only arrived after the sinking reversed.
I've always had one major question about this: how did any macroscopic life survive if photosynthesis was interrupted for 15 years? The supply of roots, tubers, and seeds would have been depleted by then... no matter how small the animals
A hypothesis that I've had for awhile is that the pressure wave ruptured the air sacs in any dinosaur larger than a dog. Any smaller and the pressure wave wouldn't have shrunk down enough to have gone through their respiratory system. Best example I can give is that it's easier to push a perpendicular sheet of paper through a hole the size of a plate, but do that with each subsequently smaller hole you will eventually get to a size that's larger than the thickness of 2 sheets yet won't be able to be pushed through the hole, not without moving the structure the hole is in. This would also explain why insects were hardly effected by the impact.
Good hypothesis.
This is a topic that is fascinating to consider. Thanks for putting this together!
Pretty cool to think a dwarf tyrannosurid might have evolved from T. rex. Even still, prey was probably too small to sustain such a beast, or it could have been a mix of factors that drove the hypothetical dinosaur to extinction. Either way, we might share this era with non-avian dinosaurs 😁
Quetzlcoatlus, therizinosaurus, Spinosaurus. My favorites
The asteroid hit the dynosaurs on the thumbnail so hard that they got sent to phyrexia.
that little triceratops caught me by surprise - always used to see big adult versions and this completely blew my mind
7:33 If they survived for that long after the impact, what eventually killed them off?
We don't know. But my guess is that no non-avian dinosaurs survived for more than a few weeks. The aftermath's effect on the climate would have been the killer. IMO if any had made it much beyond that then their descendents would probably still be around.
@@carelgoodheir692I think it's possible they might have lasted a few years actually, though likely in tiny numbers and in isolated pockets.
It's entirely possible a genetic bottleneck could have precipitated their end.
No genetic diversification? Maybe their numbers were slowly dwindling after the impact killed the majority, many options are possible
Me
Like he said, changes in the environment. New animals would've evolved that could out compete the dinosaurs for food or even became their predators. Hell, at that point it could've even been new diseases that killed them off
Well, I've seen footage of Raquel Welch fighting dinosaurs - absolute proof, I feel, of their survival!
Most people on here have no idea whatsoever what you're talking about. I remember it clearly. My first movie alone at the movie theater. It was a double feature. In the second movie The Creature from the Black Lagoon crashed a pool party which was attended by a lot of girls in bikinis. I was three and a half. Kids can't do that these days. I just realized I may be a dinosaur.
I know if they were still around we would not be here, but still...poor guys.
Eh we're nasty, don't forget that.
-"What _really_ killed the dinosaurs?"
-"MEEEEEEEEEEE!!!!!!" (zap-zap-zap)
Respect for not making it 10 minutes
You know that would make for a pretty interesting and potentially educational video game. You play as one of several types of non-avian dinos (from several different regions) who must survive in the aftermath of the impact. See how long you last!
With the win scenario being you evolve into a bird. :D
Or maybe a max difficulty scenario where you remain a non-avian Dino and see how long you can last for
There were fossils of dinosaurs while dinosaurs were still living that’s how long they were here for. Crazy
0:12 the most American metric ever
No, the whole system collapsed FAST. It just had to. Food chain, top to bottom, bottom to top, all gone. And the rocks prove it. They had a good long long run.
00:01 I didn’t realize we moved from 65 to 66 millions years. I’m getting old…a million years old
36° Fahrenheit is not 20° Celsius, but more like 2...
Surprised I didn't see more comments correcting this
@@NathanRFMuir same, but to be fair I did not scroll through 2000 of them ...
WAIT, we're taught ocean life IS more sensitive to environmental changes but the survival of terrestrial dinosaurs has less evidence or less support? You would think the geology would favor land over sea animals.
This was really great start to my morning. Thank you Captain.
Oceangoing dinosaurs are far more likely to have been fossilized. They just need to die naturally anywhere with an unusually high sediment deposition rate so their bones last long enough to start mineralizing. On land they basically need to drown in a peat bog or be buried by a landslide, or their bones will be cracked open by scavengers for the marrow.
Our best fossil of one land dinosaur species (I forget which one) actually comes from an ocean sedimentary rock. The hypothesis is it drowned in a river, was swept out to sea, floated for a few days/weaks due to bloating as it rotted, then sank in the deep ocean once it exploded from gas buildup. It landed upside down in mud which was rapidly covered, so now we have a perfect imprint of the spines and armor on its back as a fossil.
Hmmm yes and no. The land has less biodiversity on it in general compared to the ocean. So if had a major climate change. Most of life on land would be gone but the ocean would still have double or triple the amount of life compared to land. You also have to think 2/3 of the earth is water not land and water itself acts a barrier similar to how the earth is to space. So basically you can say the ocean is a planet inside a planet.
6:11 Good to see Robert De Niro has a passion outside of acting.
0:11 Americans using literally ANYTHING except metric challenge
You have to factor at the same time that this impact happened the deccan traps had been spewing lava and poisonous clouds of ash for over 500,000 years leading up to this event.
From Alberta here. I'm glad you mentioned our province and its significance to that time frame. We have the most diverse dinosaur life in the world, from what I hear. I think in that time period, Alberta was an island. I could be wrong on that
Still the most controversial patch change in the history of the game.
They shouldn't have sold out, the new devs came and completely changed the game
If you had all those giant dead dinosaurs, the amount of insects and maggots would have been enough to keep smaller dinosaurs going for years. The lack of photosynthesis could have been completely overcome by feeding on insects and scratching up seeds.
considering that: 1. the "age of reptiles" was probably a result of post-Permian environmental factors; 2. entire biomes of Dinosauria had successfully adapted to arctic environments well before the end of the Cretaceous; and 3. post-Mesozoic terror birds failed to compete with American mammals, it is highly possible that non-avian Dinosauria did survive quite some time after the asteroid and the traps before being out-competed by migrating, faster generational mammals...
No! The terror birds did NOT become extinct because of competition with American mammals. They declined in the Miocene and in South America only a small genus, Psilopterus, survived into the Pleistocene. And in North America, the Titanic successfully coexisted with mammals for more than 3 million years.
@@user-yv7qw2ey7r the reasons for their demise in the north was mirrored in the south and the rise of specific mammalian predators was part of it...
Considering how there are unconfirmed sightings to this day of dinosaur like creatures such as the Pterosaurs of New Guinea, the Arica Monster, The Loch Ness Monster, and the Mokele Mbembe I do believe that a very small population of Dinosaurs managed to survive the extinct event, but slowly some species became extinct after the extinct event due to the lack of food and resources.
I don't understand why nobody gives those fossils from New Mexico any credit. Judging from what you said they have a pretty solid alibi (imo) for the major criticism of their methodology. Like yeah, it sounds unlikely and doesn't seem to fit with our current understanding of things, but that's how our understanding of a topic evolved. By explaining unusual phenomena, not just ignoring them.
3:02 36 Fahrenheit isn't 20 Celsuis. It's 2 Celsius.
Listen again. He doesn't say temperatures dropped *to* 36F, but *by* 36F. A temperature decrease of 36F is the same as a temperature decrease of 20C.
I love the use of American measurements in this physics video "28 times the speed of an AK bullet", "10 billion Hiroshima's.", all common SI units, lol.
Why did pigeons and sea gulls survive and not even one really cool dinosaur!?!? There is absolutely no justice in this world! Lol
Pidgeons and seagulls are still pretty cute and sort of interesting tho
Jesus...birds are dinosaurs. They happened to develop flight, and were relatively, small, which helped. Look up a cassowary, native to Australia. Those are basically small dinosaurs, of the "old school" variety.
Imagine they‘d had survived in some area just barely and had survived. Imagine Columbus finding not india as he intended but a continent of dinosaurs with actual T-Rexes. Probably completely impossible due to the dectonic plates but very interesting
I loke the way you think 🤔😏
Good idea for a movie right there!
We need a follow-up video on why the 2013 findings are considered not valid. What was the quality of the actual research and why did it get so much pushback
2:22 wouldn’t that work the other way around? (Outside in?)
Yeah that's really silly.
I mean if they did survive they were probably wiped out by mammals poaching the eggs out of their nests. Then the ones that survived that and evolved into modern birds were the ones that built nests off the ground high up in trees avoiding the egg snatching.
Apart from N.Z
GOD DAMN MICE!
bro i wish we could actually see what the planet looked like back them, if we ever invent a time machine the go pro footage is going to be sick
It’s honestly not that hard to believe that a few survived, it makes sense.
It's really difficult finding information about this thanks for posting.
I once read one population of dinosaurs seemed to exist up to forty thousand years after the event and I've always been very interested in finding out more.
6:42 The Valley of Gwangi was real?
0:12 Which type of AK cartridge are we talking about? 7.62×39mm or 5.45×39mm? 7.62×39 has less muzzle velocity than the 5.45×39mm (2,300 fps ~ 2,600 fps) due to it being heavier.
It’s not that deep, no need to get so literal
@@TomPiesseyes it is
😂
It's 7.62x39 as that is the ak47 bullet not the 5.45x39 used on the ak74 and other models
we get it bro, you know guns💀
3:03 36° Fahrenheit is NOT 20° Celsius.
Yeah that’s a really big difference in temperature
It's about 1⁰C
A "drop of 36° F or 20 °C" is a decrease of the same amount.
If you decrease a temperature from 68°F to 32°F, it is exactly the same as dropping it from 20°C to 0°C.
Listen again. He doesn't say temperatures dropped *to* 36F, but *by* 36F. A temperature decrease of 36F is the same as a temperature decrease of 20C.
@@maxfan1591 Oh ok, right I understand, I wasn’t listening closely.
This got me thinking that if we are living through a major extinction event, it is always possible that a small number of humans will luckily survive the effects of climate collapse (if it comes to the ultimate effects).
We need a post-apocalyptic survival game where you're a dinosaur during this time period.