It also makes me think of when WWD originally stated that sauropods went into decline after the end of the Jurassic and died out during the Cretaceous, which was certainly far from the truth lol
@@hypn0298I remember dinosaur planet in the Alpha's Egg episode. They said there was no sauropods in the late Cretaceous of North America. But a few survivors left in South America. So much changes within a few decades of discovery
@@Rexington There is no doubt that the Late Jurassic was the golden age of Sauropods in North America. But that is not necessarily the case for the rest of the world. For instance, the Cretaceous of South America (and much of Gondwana) could definitely be called a golden age of Sauropods, and Titanosaurs more specifically. With the largest animals to ever walk the Earth. And thanks to South America (in the mostly likely circumstance) for providing North America with a Late Cretaceous giant of our own.
I've got a weird theory about these guys I've been wanting to share, I'm actually wondering if when large sauropods die they could produce the equivalent of "whale falls" in deep oceans, except on land. They're huge animals with a ton of meat that can live for significant periods, and are nearly impossible to kill or hunt once they reached a max size threshold. Perhaps whole communities of carnivores just followed them around and specialized on consuming sauropods that died of natural causes since just one animal could feed a ton of predators for months.
I'd say that's a high possibility, but I wonder how many were in a herd or a pack that warranted predators to follow them. We see wolves follow large herds of buffalo or reindeer, but the herds are massive and the wolves are few in comparison. I think if one Alamosaurus dies, it'd warrant a group feast but only for the carno's near enough to smell it.
@@RealElequist That's kind of what I was thinking too. Other than humans the only animals that have successfully ever hunted an elephant are lions, and there's only one pride known to be able to do it and they exclusively hunt juveniles or young adults - at a certain point elephants are just too big to actually be able to safely take down. The only way they can take advantage of all that food is to just wait until one dies naturally or by accident.
"Indicating their tales were quite active, so to speak"... Now I cannot get the picture out of my mind of an Alamosaurus wiggling it's tale like an excited dog!
Native to the southern edge of North America, this colossal Titanosaur was the first confirmed sauropod found on the continent after a nearly 30 million year absence. It's taxonomical placement in the Titanosaur clade is controversial, with various hypotheses ranging from it being a Saltasaur that evolved gigantism to being the last of a sister lineage to the Lognkosaurs. Found in the Javalina and Ojo Alamo formations, fossils belonging to T. rex have been found in these deposits as well. In fact, they have found T. rex teeth in association with Alamosaurus vertebrae. Due to the fragmentary remains, it's cannot be ascertained as to whether scavenging, predation, or the natural process of time was involved in the bone placement, but it's possible that T. rex preyed on younger juveniles, which would've still been in the range of African Bull Elephants and Columbian Mammoths, with the adults and subadults being too large for its rather limited jaw span to accomodate.
it's been suggested in the later years that sauropods got so large, that they were nearly unkillable, and carnivores (tr) more or less treated them as "traveling meals", snacking on them but not killing them.
If i remember right there was a few bones from one alamo who was a little over 100 feet long. Would be amazing to see something that big walking around
Please put credit to the dinosaur footage and art shown on screen, not only for the artists but for people like me who want to watch the documentories those clips are from.
I mean a Alamo Baby would be a pretty good snack for a Quetzal.... and the Alamos could give the quetzals enough time to lift up when predators aproach
@@penguinlord6098 you're 100% right, but that also kinda goes without saying. Predators will almost never choose to go after prime physical specimens unless there are some special circumstances.
While it's true that Alamosaurus had some form of protective features like spikes, there's currently no solid evidence of a theropod larger than T. rex that might have competed with it. Most current research supports T. rex as one of the largest known theropods. It will be interesting to see if future discoveries provide more insights into this.
@@DominustyrannusHorridus Aren't gigas bigger? They have lesser fossils but said fossils are on average already around the size of larger T-rexes. Plus the recent study you mentioned applies to all extinct animals. We are more likely to discover the 90 percentile that are average Vs the truly massive 10 percentiles.
I also run and publish Prehistoric Magazine three times per yr. Congrats on this channel. If for some reason you might like free ads for this UA-cam channel in the upcoming sept issue let me know. Mike
Whats up Extinct Zoo. Love your vids, especially when your highlighting underrated animals in grave detail. I had a video request. You think you could make a video on Pleistocene Jaguars, Like the Ancient Modern jaguars that were bigger than their modern Descendants or the extinct species like the North American Jaguar P. Augusta or the Giant South American Jaguar P. Mesmebrina. Definitely would be awesome, Ancient Jaguars in my opinion were definitely contenders for some of the Largest felines to have ever lived and their is so much interesting history behind them, like how they’ve been confused with american lions or could possibly be the american lion “allegedly” Or How their were some of the closest Analogues to Smilodon as they too were big robust almost bear like cats. Would definitely appreciate if you could respond. Keep the great content going!
This text describes the Alamosaurus, a massive sauropod dinosaur that lived during the Late Cretaceous in North America. It highlights the discovery and naming of the dinosaur, its size, comparisons with other sauropods, and its classification within the Titanosaur clade. The text also explores the Alamosaurus' habitat, coexisting species, and its significance as one of the last dinosaurs to survive until the K-T extinction event. It emphasizes the dinosaur's robustness, potential defensive capabilities, and its legacy as one of the largest terrestrial animals ever.
The bony plates and tall strong back would make a fun perching structure for the Quetzals. They could ride along for protection and fly to spot risks and opportunities.
I didn't think this was a real animal simply because of the sauropod hiatus and how older documentaries made it seem like none of them survived into the Cretaceous. Wild to find put years later that sauropods only got bigger!
There’s a very good chance that we just don’t have the fossils. Think about how much has to go right to get a single fragment of a bone preserved and then discovered by humans who can actually study it properly. I wouldn’t be surprised if the dinosaurs we know about are less than 10% of the actual biodiversity of their eras
Ankylosaurus: I have armor to defend against predators. Argentinasaurus: I have my size to defend against predators Alamosaurus: Hi there, what are you guys talking about?
Really active tails? So, like happy-dog active? How do we eliminate the possibility that tail damage might be from clumsy or balance-maneuvers, like the tail whacking into trees and rocks while dealing with a challenge in terrain or slipping in mud? The jump to damage = battle is so automatic in paleontology, but how do we know?
At 2:36 you say 5 meters tall but either this is completely wrong or your scale is wrong. There are ~ 26 squares left to right maybe representing the 26 meters, the human would have to be 2 meters tall if that is the case and 12.5 squares going up, so the dino would be about 12 meters tall on that scale, which actually makes more sense as 5 meters is about the height of a giraffe and these things look bigger. I might be wrong?
I dont believe Alamosaurus and Titanosairus sometimes stood on their hind legs, on the contrary it is likely that they often waded half submerged in rivers and lakes to take the weight of their legs and browsed from the bank. But how did they drink? We all know that water doesn't flow uphill and we all know Titanosaurus and similar dinos had to drink. How did they force the water to travel up their immensely long necks to a height of 16 feet? One way to do it would have been to take a large mouthful of water and raise their heads above the horizontal, then gravity would pull it down into their stomach like it does with us, but that seems a very laborious way of drinking. Of course, if they were standing in 12 feet of water thery wouldn't have far to lift it.
make a video about when the marsupials migrated from [what is now] S.America, through Antarctica to Australia... when those three land masses were connected...
I read the book about the battle of a triceratops and t rex back in the 80's in grade school. It had evidence, as in bones and damage. While the t rec kept biting trying to get better bites in on the triceratops back, it was getting stabbed deeper by it's horns. T rex was stupid beyond belief.
This was tackled in a video that I forgot the name of. The fact that sauropods had a circulatory and respiratory system like birds likely allowed efficient distribution of oxygen and energy. That means it allowed such a massive growth potential. Also, let's entertain the possibility that trees during the Cretaceous were larger and more nutrient-dense to allow such titans to exist.
Yes, because both Alamosaurus sanjuanensis and Tyrannosaurus rex were found in the North Horn Formation of Utah. A possible specimen of Alamosaurus was also found in the formation where Tyrannosaurus mcraeensis was discovered.
I always feel like it's weird to see paleo art and AI videos of dinosaurs in hot, sandy deserts. You don't normally associate deserts with giant lizards, or really any big animals.
Great vid and excellent information on an underrated North American titan. Though I would classify Alamosaurus as “one” of the largest animals to live in North America known from decent remains. Fragmentary wise, Maarapunisaurus is estimated to be an average of 85 tons and even the larger Brachiosaurus specimens probably pushed over 50 tons as of recent estimates. Alamosaurus was definitely the largest sauropod from Cretaceous North America.
Threrizinosaurus is my all time favourite dinosaur! But Australovenator is my favourite more obscure one. And while not a dinosaur I also love kronosaurus 🥰
Perhaps the "sauropod hiatus" occurred due to the earlier species of sauropods' overconsumption of their favored vegetation. They got too successful, in other words, and paid the ultimate price -- extinction. Alternatively, maybe there was a localized or global climate event, which adversely impacted the plant-life that they depended upon, which in-turn stressed the earlier species of sauropods to the point of extinction. Over millions of years of time, the climate shifted back, becoming favorable to the kind of plant-life preferred by sauropods; and titanosaurs like Alamosaurus emerged to fill the niche left by that earlier species of sauropods that went extinct
It's a shame that Sauropods get slept on so often, no one talks about Alamosaurus enough, thing might have actually have met Tyrannosaurus on occasion and no one seems to care
how much continuity does the fossil record show - even if focussed only on a "small" part of the world like North America? how many fossils of - in this case - sauropods did scientists find there at all and how exact are their predictions about the age of said fossils? there might have been a (major) decline in the sauropod population in North America at that time, but there could have still sauropods lived throughout that "hiatus" time, but we couldn´t find any fossils of them yet (or we might have been mistaken by the age of some findings). if the continents where already seperated from each other by oceans back than, it would still be more likely of smaller numbers of sauropods living in that area throughout that "hiatus" than them migrating across the oceans and (fictional) islands from different continents.
It’s a valid point but in this case we’d have to know whether Alamosaurus had a greater affinity with a North American ancestor or whether it appears more likely to have shared a common ancestor with its Southern American or Asian relatives to inform the likelihood. I too agree it’s likely that a reduced population would like leave few fossils, and after all, absence of evidence is never evidence of absence. I also wondered if the resurgence was made possible by angiosperm flora; although the video suggests the diets had not changed from earlier sauropods, it might be that the other herbivorous creatures that had pushed the sauropods out preferentially grazed on the newer types of plants leaving the older less nutritious plant fodder for the sauropods.
The fossil record is incredibly bias to large animals that frequented floodplains or rivers because its the best location for the process of fossilization to occur. We will never be able to know the true diversity of animals back then as other habitats especially rainforests do not leave behind fossils.
Scoots or armor on the back would probably be useful for for the young but a waste on the largest adult. Armor on the lower part of the body would be more useful to them since T-Rex could not reach the back. Theropods could attack the lower part of the body and then wait for the animal to bleed out .
Alamoasaurus is such a cool dinosaur. It's one of the biggest dinosaurs ever found and it lived in north America and in the late cretaceous the same time as tyranuarus did.
I remember when I first learned there was a giant Sauropod still around in the time of Tyrannosaurus and Triceratops. It made me beyond happy.
It also makes me think of when WWD originally stated that sauropods went into decline after the end of the Jurassic and died out during the Cretaceous, which was certainly far from the truth lol
Same! I thought they had went extinct by then.
@@hypn0298I remember dinosaur planet in the Alpha's Egg episode. They said there was no sauropods in the late Cretaceous of North America. But a few survivors left in South America. So much changes within a few decades of discovery
@@hypn0298 I should have said 'still in North America.' As there were Sauropods a plenty in the rest of the world.
@@Rexington There is no doubt that the Late Jurassic was the golden age of Sauropods in North America. But that is not necessarily the case for the rest of the world. For instance, the Cretaceous of South America (and much of Gondwana) could definitely be called a golden age of Sauropods, and Titanosaurs more specifically. With the largest animals to ever walk the Earth. And thanks to South America (in the mostly likely circumstance) for providing North America with a Late Cretaceous giant of our own.
I've got a weird theory about these guys I've been wanting to share, I'm actually wondering if when large sauropods die they could produce the equivalent of "whale falls" in deep oceans, except on land. They're huge animals with a ton of meat that can live for significant periods, and are nearly impossible to kill or hunt once they reached a max size threshold. Perhaps whole communities of carnivores just followed them around and specialized on consuming sauropods that died of natural causes since just one animal could feed a ton of predators for months.
I'd say that's a high possibility, but I wonder how many were in a herd or a pack that warranted predators to follow them. We see wolves follow large herds of buffalo or reindeer, but the herds are massive and the wolves are few in comparison. I think if one Alamosaurus dies, it'd warrant a group feast but only for the carno's near enough to smell it.
Imagine how they would explode after dying
They certainly would have been heavily-scavenged. Followed? I don't know, but I could see it. They'd provide a massive amount of low-effort meat.
Probably. Carnivores in Africa do this with elephants
@@RealElequist That's kind of what I was thinking too. Other than humans the only animals that have successfully ever hunted an elephant are lions, and there's only one pride known to be able to do it and they exclusively hunt juveniles or young adults - at a certain point elephants are just too big to actually be able to safely take down. The only way they can take advantage of all that food is to just wait until one dies naturally or by accident.
Remember the Alamo! ...wait, wrong Alamo.
'Can't ya remember anything?' "I remember the Alamo." 'YEEEHAH!' (from "Pee-wee's Big Adventure").
Still an epic final stand.
Was Alamo sore after the fight?
@@Andreas_42 ALAMOSAURUS
Remember the Ojo Alamo!
"Indicating their tales were quite active, so to speak"...
Now I cannot get the picture out of my mind of an Alamosaurus wiggling it's tale like an excited dog!
well, it's, tail, actually.
Suddenly, the size of that Alamosaurus skeleton in the Jurassic Park visitor center compared to the T-rex makes so much sense.
I always thought that skeleton was a brontosaurus
@@evodolka That was like... the only popular sauropod at the time, so...
@@dogdog357 that and Brachyosaurus, and maybe Diplodocus
@@evodolka *me watching youtubers flock to correct eachother on irrelevant points:* "They DO move in herds..."
@@homeygfunkoffacherryfruitl4971 fr
RIP Dinosaurs. Can’t believe it’s already been 66 million years. Gone too soon. Never forget
I for one am glad, I don’t like 6ft long centipedes
@@Lohanujuan That was a species of I think it was either millipedes or centipedes, it lived on the Carboniferous, not the Cretaceous.
At least we have birds to remember them by.😂
Rip James Earl Jones. Can’t believe it’s already been 1 day. Gone too soon. Never forget.
RIP Anomalocaris. You were a real one. Hard to believe it's already been 500 Millions years since your passing
I love dinosaurs
Who doesn't 😆
@@evodolka Boring people
@@Hugo-yz1vb 100% agreed
Hell yeah
man u and me both‼️
Native to the southern edge of North America, this colossal Titanosaur was the first confirmed sauropod found on the continent after a nearly 30 million year absence.
It's taxonomical placement in the Titanosaur clade is controversial, with various hypotheses ranging from it being a Saltasaur that evolved gigantism to being the last of a sister lineage to the Lognkosaurs.
Found in the Javalina and Ojo Alamo formations, fossils belonging to T. rex have been found in these deposits as well. In fact, they have found T. rex teeth in association with Alamosaurus vertebrae.
Due to the fragmentary remains, it's cannot be ascertained as to whether scavenging, predation, or the natural process of time was involved in the bone placement, but it's possible that T. rex preyed on younger juveniles, which would've still been in the range of African Bull Elephants and Columbian Mammoths, with the adults and subadults being too large for its rather limited jaw span to accomodate.
Adding spikes instantly ups the cool factor of anything. I’m loving the spikes down its back. Fully endorse the spikes. 😊
The Alamosaurus was amazing along with other sauropods! I am glad that they are getting their due in the spotlight.
it's been suggested in the later years that sauropods got so large, that they were nearly unkillable, and carnivores (tr) more or less treated them as "traveling meals", snacking on them but not killing them.
So now we know how Quetzalcoatlus got airborne. They climbed up the tail, along the back, up the neck, and then leapt off the heads of Alamosaurus 😆
It’s crazy the earth really had tailed beasts walking around at one point
That muscular build makes it look like The Rock as a dinosaur
How you doing these days Tay??? Just seeing your name brings back nostalgia! I hope you're doing well!
"Tay likes dinosaurs." Noted.
Yo its tay 🔥🔥🔥
If ya smell what the Alamosaurus was cookin'!
It’s the Tay Man himself.
Alamosaurus mentioned!
Yes!
My guy is getting some love!
The alamosaurus couldve been the top contender for the largest creature during the time of the extinction
Sauropods supremacy in Mesozoic is outstanding. From Triassic to Cretaceous. My favorite Dinosaur
danm, nothing like watching a ExtinctZoo video then going to bed right after.
4:01 these are cervicals, not caudals. Caudals are the tail vertebrae
I was wondering if anyone else picked that up. Not many have.
If i remember right there was a few bones from one alamo who was a little over 100 feet long. Would be amazing to see something that big walking around
Please put credit to the dinosaur footage and art shown on screen, not only for the artists but for people like me who want to watch the documentories those clips are from.
I know the video at 5:00 is from a channel called Dead Sound. He makes animated short films including a series that was about dinosaurs
Bro we dont want to see text on every clip and picture, what a dumb request.
I really hope we get more fossil discoveries of this amazing sauropod.
I mean a Alamo Baby would be a pretty good snack for a Quetzal.... and the Alamos could give the quetzals enough time to lift up when predators aproach
I thought the same thing. Hatzegopteryx hunted pigmy sauropods on Hateg Island.
Probably the only animal Tyrannosaurus wouldn’t hunt.
Ankylosaurus too I guess
A triceratops in its prime, bull edmontosaurus, a particularly pissed anky would all be too much for a rex.
Adult specimens, certainly. Younger ones, however, were more appropriate.
Alamosaurus, Triceratops and Ankylosaurus all were out of scope of T rex.
@@penguinlord6098 you're 100% right, but that also kinda goes without saying. Predators will almost never choose to go after prime physical specimens unless there are some special circumstances.
The fact it had protective spikes on its back may mean there’s a super giant theropod we haven’t found yet. ? Maybe Rexy has competition
Highly unlikely, the protective spikes were probably a evolutionary leftover from its days in South America.
While it's true that Alamosaurus had some form of protective features like spikes, there's currently no solid evidence of a theropod larger than T. rex that might have competed with it. Most current research supports T. rex as one of the largest known theropods. It will be interesting to see if future discoveries provide more insights into this.
@@DominustyrannusHorridus Aren't gigas bigger? They have lesser fossils but said fossils are on average already around the size of larger T-rexes. Plus the recent study you mentioned applies to all extinct animals. We are more likely to discover the 90 percentile that are average Vs the truly massive 10 percentiles.
@@billobejero6290they are taller, but are thinner and way lighter
It's probably meant to defend against smaller predators, like pack-hunting raptors trying to jump on its back where it'd be harder to defend.
I also run and publish Prehistoric Magazine three times per yr. Congrats on this channel. If for some reason you might like free ads for this UA-cam channel in the upcoming sept issue let me know. Mike
This dinosaur caused the ending of a 30 millions years sauropod hiatus in North America!
Whats up Extinct Zoo. Love your vids, especially when your highlighting underrated animals in grave detail. I had a video request. You think you could make a video on Pleistocene Jaguars, Like the Ancient Modern jaguars that were bigger than their modern Descendants or the extinct species like the North American Jaguar P. Augusta or the Giant South American Jaguar P. Mesmebrina. Definitely would be awesome, Ancient Jaguars in my opinion were definitely contenders for some of the Largest felines to have ever lived and their is so much interesting history behind them, like how they’ve been confused with american lions or could possibly be the american lion “allegedly” Or How their were some of the closest Analogues to Smilodon as they too were big robust almost bear like cats. Would definitely appreciate if you could respond. Keep the great content going!
Considering you do not want to be on the receiving end of a green iguana tail, imagine the power of a sauropod tail!
This text describes the Alamosaurus, a massive sauropod dinosaur that lived during the Late Cretaceous in North America. It highlights the discovery and naming of the dinosaur, its size, comparisons with other sauropods, and its classification within the Titanosaur clade. The text also explores the Alamosaurus' habitat, coexisting species, and its significance as one of the last dinosaurs to survive until the K-T extinction event. It emphasizes the dinosaur's robustness, potential defensive capabilities, and its legacy as one of the largest terrestrial animals ever.
The bony plates and tall strong back would make a fun perching structure for the Quetzals. They could ride along for protection and fly to spot risks and opportunities.
Quetzals almost certainly couldn’t perch.
@@baneofbanesNot like bird.
Rest in peace Long Boi 😔
Having a giant sauropod stomping around likely would drive other animals out of hiding which is what quetz prayed on
Love the art you used for the thumbnail
Can’t believe you didn’t show the whole clip of Godzilla throwing an Alamosaurus on the beach lol.
I didn't think this was a real animal simply because of the sauropod hiatus and how older documentaries made it seem like none of them survived into the Cretaceous. Wild to find put years later that sauropods only got bigger!
There’s a very good chance that we just don’t have the fossils. Think about how much has to go right to get a single fragment of a bone preserved and then discovered by humans who can actually study it properly. I wouldn’t be surprised if the dinosaurs we know about are less than 10% of the actual biodiversity of their eras
Ankylosaurus: I have armor to defend against predators.
Argentinasaurus: I have my size to defend against predators
Alamosaurus: Hi there, what are you guys talking about?
It only makes sense that the land of the biggest carnivorous dinosaur also houses the biggest herbivorous dino ever.
Narrator: Alamosaurus is the biggest North American Sauropod.
Maraapunisaurus, Brachiosaurus , Barosaurus, Sauroposeidon: hold our beer.
Top 5 biggest North American sauropod
1. Marapunisaurus- 80 tons
2. Brachiosaurus- 73 tons
3. Sauroposeidon- 56 tons
4. Barosaurus- 53 tons
5. Alamosaurus- 40 tons
are you saying averages? because the guy said the biggest alamo would've been 88 tons
Largest Barosaurus specimen is probably Supersaurus (as originally identified)
I LOVE UR VIDEOS ❤! LOVE FROM ENGLAND ❤❤
You forgot to compare Alamosaurus with another contender: Sauroposeidon
these are so large I am struggling to even conceive how gigantic this was.... absolutely bonkers
4:00 ‘Caudal’ refers to the tail not the neck lol
9:38 why does bro sound like hes reading out his patreon subscribers
Really active tails? So, like happy-dog active? How do we eliminate the possibility that tail damage might be from clumsy or balance-maneuvers, like the tail whacking into trees and rocks while dealing with a challenge in terrain or slipping in mud? The jump to damage = battle is so automatic in paleontology, but how do we know?
They’re so cute! 🥰
Just imagining that tail turning on a T rex & just doing one good swack! Please include the confrontation in the next Jurrasic Park kind of movie.
Amazing video!!!!
Sauroposeidon still under the radar 👀
Given its massive size and extraordinarily long heavy looking neck, is it likely to have spent most of its time in deep lake water?
Nope.
Alamosaurus was probably the largest and most evolved sauropod. Truly fascinating!
I think small raiders of nests were the reasons of its decline.
Remember the Alamosautus!!!
We need more Alamosaurus representation in the media
At 2:36 you say 5 meters tall but either this is completely wrong or your scale is wrong. There are ~ 26 squares left to right maybe representing the 26 meters, the human would have to be 2 meters tall if that is the case and 12.5 squares going up, so the dino would be about 12 meters tall on that scale, which actually makes more sense as 5 meters is about the height of a giraffe and these things look bigger. I might be wrong?
5 meters to the shoulder.
@@kj_H65f I am a dummy, you are correct, but still a weird measurement. I guess nobody knows exactly how long the neck would be
It’s 5 meters to the withers, which is primarily how all animals are measured when in comes to height
@@KrivRUs probably like a k9 would lower their head when going forward and the highest point would be the shoulders
Sauropods are my absolute favorite. I wish i could see one alive
I'm still awed that these creatures actually roamed around the continents back in the day🎉🎉🎉
They make good pets though, but never let them jump up on you.
9.08 was breathtakingly beautiful
Just casually existing as an actual living battletank.
Literally took the K-Pg extinction to bring it down.
I dont believe Alamosaurus and Titanosairus sometimes stood on their hind legs, on the contrary it is likely that they often waded half submerged in rivers and lakes to take the weight of their legs and browsed from the bank. But how did they drink? We all know that water doesn't flow uphill and we all know Titanosaurus and similar dinos had to drink. How did they force the water to travel up their immensely long necks to a height of 16 feet? One way to do it would have been to take a large mouthful of water and raise their heads above the horizontal, then gravity would pull it down into their stomach like it does with us, but that seems a very laborious way of drinking. Of course, if they were standing in 12 feet of water thery wouldn't have far to lift it.
make a video about when the marsupials migrated from [what is now] S.America, through Antarctica to Australia... when those three land masses were connected...
why dont you make it?
when Alamosaurus was found, it was initially mistaken for an Apatosaurus but further study revealed that it was a new genus of sauropod right?
4:22 'Bony Scoots' is gonna be my rapper name
So all those times as a kid I played with my T rex’s and other cretaceous theropods attacking my sauropods, it actually happened
I read the book about the battle of a triceratops and t rex back in the 80's in grade school. It had evidence, as in bones and damage.
While the t rec kept biting trying to get better bites in on the triceratops back, it was getting stabbed deeper by it's horns.
T rex was stupid beyond belief.
The caloric requirements of such an animal defy logic. How could it possibly eat enough calories to survive strictly on the leaves of trees?
This was tackled in a video that I forgot the name of.
The fact that sauropods had a circulatory and respiratory system like birds likely allowed efficient distribution of oxygen and energy. That means it allowed such a massive growth potential.
Also, let's entertain the possibility that trees during the Cretaceous were larger and more nutrient-dense to allow such titans to exist.
I guess along with leaves, there's a lot of bugs, as well... protein, that.
7:16, I have never heard of this so called “sauropod hiatus”!
4:01
Did you mean to say "cervical" here or are the visuals just wrong?
Do we still know for certain that Rex existed with it. Thanks, Mike from Prehistoric Magazine
Yes, because both Alamosaurus sanjuanensis and Tyrannosaurus rex were found in the North Horn Formation of Utah. A possible specimen of Alamosaurus was also found in the formation where Tyrannosaurus mcraeensis was discovered.
I read somewhere the biggest North American dynosaur was the vergasaurus sp.
I always feel like it's weird to see paleo art and AI videos of dinosaurs in hot, sandy deserts. You don't normally associate deserts with giant lizards, or really any big animals.
"Looking through Charlie Gilmore´s eyes"
alamosaurus just doesn't roll off the tongue like brachiosaurus
Average ark playing looking at this video : interesting
Those guys must have required a ton of vegetation a day for food. Bet they made quite an impact on the environments they migrated through.
Great vid and excellent information on an underrated North American titan. Though I would classify Alamosaurus as “one” of the largest animals to live in North America known from decent remains. Fragmentary wise, Maarapunisaurus is estimated to be an average of 85 tons and even the larger Brachiosaurus specimens probably pushed over 50 tons as of recent estimates. Alamosaurus was definitely the largest sauropod from Cretaceous North America.
I've also heard that barosaurus might've been exceptionally large, too.
What is y'all's favorite but more obscure or unknown dinosaur? I wanna learn more about the unknown guys, they deserve love too.
majungasaurus
Threrizinosaurus is my all time favourite dinosaur! But Australovenator is my favourite more obscure one. And while not a dinosaur I also love kronosaurus 🥰
Titanovenator the African 40 foot Abelisaurid
@@SSPB300mine too
Perhaps the "sauropod hiatus" occurred due to the earlier species of sauropods' overconsumption of their favored vegetation. They got too successful, in other words, and paid the ultimate price -- extinction. Alternatively, maybe there was a localized or global climate event, which adversely impacted the plant-life that they depended upon, which in-turn stressed the earlier species of sauropods to the point of extinction. Over millions of years of time, the climate shifted back, becoming favorable to the kind of plant-life preferred by sauropods; and titanosaurs like Alamosaurus emerged to fill the niche left by that earlier species of sauropods that went extinct
It's a shame that Sauropods get slept on so often, no one talks about Alamosaurus enough, thing might have actually have met Tyrannosaurus on occasion and no one seems to care
Extinct zoo will you do science videos on movie dinosaurs?
Alamosaurus is my favorite dinosaur :)
I love dinosaurs
how much continuity does the fossil record show - even if focussed only on a "small" part of the world like North America?
how many fossils of - in this case - sauropods did scientists find there at all and how exact are their predictions about the age of said fossils?
there might have been a (major) decline in the sauropod population in North America at that time, but there could have still sauropods lived throughout that "hiatus" time, but we couldn´t find any fossils of them yet (or we might have been mistaken by the age of some findings).
if the continents where already seperated from each other by oceans back than, it would still be more likely of smaller numbers of sauropods living in that area throughout that "hiatus" than them migrating across the oceans and (fictional) islands from different continents.
It’s a valid point but in this case we’d have to know whether Alamosaurus had a greater affinity with a North American ancestor or whether it appears more likely to have shared a common ancestor with its Southern American or Asian relatives to inform the likelihood. I too agree it’s likely that a reduced population would like leave few fossils, and after all, absence of evidence is never evidence of absence.
I also wondered if the resurgence was made possible by angiosperm flora; although the video suggests the diets had not changed from earlier sauropods, it might be that the other herbivorous creatures that had pushed the sauropods out preferentially grazed on the newer types of plants leaving the older less nutritious plant fodder for the sauropods.
The fossil record is incredibly bias to large animals that frequented floodplains or rivers because its the best location for the process of fossilization to occur. We will never be able to know the true diversity of animals back then as other habitats especially rainforests do not leave behind fossils.
Alamosaurus is 51.5 -80 tons that makes it the second largest animal in North America Number One is Maraapunisaurus 89.26-130+ tons
Scoots or armor on the back would probably be useful for for the young but a waste on the largest adult. Armor on the lower part of the body would be more useful to them since T-Rex could not reach the back. Theropods could attack the lower part of the body and then wait for the animal to bleed out .
2:39, why do you only bring up its shoulder height and not its head height?
We need to bring these bad boys back
Please make video about trex
There's already dozens on YT. I prefer to see videos on lesser known species.
Alamosaurus also appeared as a skeleton in Jurassic Park
8:35 If those individual stones could only talk…
Alamoasaurus is such a cool dinosaur. It's one of the biggest dinosaurs ever found and it lived in north America and in the late cretaceous the same time as tyranuarus did.
I think I found my new favourite dinno
Was it oxygen that allowed for such powerful and mighty fellow creatures to flourish then?
When is the next one about human evolution? :D
Imagine a human being coming up to about the toenail of this giant...that would be one small human being.
Alamosaurus Sanjuanensis the last Titan of North america in the Cretaceous Period
Did someone named Richard name Richardoestesia??? 😂😂
Can you do a size comparison between Real life dinosaur and famous dinosaur game ARK
Spikes would have made mating difficult.