History of the Earth Part 4: Phanerozoic Eon - Cenozoic Era
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- Опубліковано 10 тра 2022
- We are almost through the Phanerozoic eon! After the Paleozoic and Mesozoic Eras, we get to the Cenozoic era, which is the one we are still living in today. This is the age of mammals, which came to dominate the Earth, and here we also see the continents begin to approach their current locations. We also begin to see some glacial activity. Let's get a closer look!
Script by Jared Matteucci
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The most hype series of 2022. Always love getting these notifications.
he's just regurgitating Wikipedia. not a bad thing because it's more consumable.
@@TheWunder I would say that's more of a reflection on how good Wikipedia can be. AFAIK, this is one of the series Prof. Dave has the script written by someone else, who is an expert in the field, and he does the visuals.
As the writer of the script, I can say that it is not regurgitated Wikipedia. Why even say that? Are you jealous of Dave or something?
When I was a kid in the 60s, I told my teacher that it looked like South America and Africa would fit together. She told me it was just a coincidence.
No. Public school near Milwaukee. Although theory of plate tectonics was in the 20s, I don't think it gained traction until the 60s. So a elementary school teacher wouldn't be aware of the latest advances.
The idea of continental drift was not well established in the early 60s. Maybe your teacher didn't know about it.
Right. The theory had been proposed decades earlier but only known in geological circles. There was no internet back then. Plus, little did I know the I was in the forefront of the theory as a third grader.
I have heard of this story. I think I heard this story while watching a documentary on Nostradamus
You just stole that from “an inconvenient truth”
One small correction: The dinosaurs did not all die off. The descendants of the avion dinosaurs are still with us and their species outnumber the mammals about 2 to 1. Yes, all the big ones died off, but not all of them. I imagine that the birds survived for the same reason the mammals did. They were small and endothermic. That made it possible for them to survive the impact winter and food shortage that likely lasted for decades.
Yeah for that's the reason why we can eat chickens 😂😂😂😂😂
Dave you're one of my top channels bro....i learn new things EVERYTIME i watch your videos...please keep up the great work you're doing...
Great info, Professor Dave. Harkening back to my school days, I recall studying the different epochs, eons, and periods, but we never really explored the impacts of plate tectonics on ocean currents and global climate. In those days, we basically studied the causes of the transition from predominant dinosaur to predominant mammals, and mixed in some info on how early primates evolved into homo sapiens. Always appreciate you taking these scientific wonders and explaining history through story-telling. Kudos once again!
Keep making videos Dave, I dont care how niche they get. The internet needs you!
Great video! Explains it in a way that makes it very easy to understand. I really never have problems with understanding on this channel, and that even though I am a little stupid.
I’m so glad I found this channel! Great videos!
i was waiting for this video
thanks for upload
Wait, this all happened before the flood? Just kidding. I am a Catholic but to believe the earth is only 6000 years old is dumb. Love your videos.
Yo, we have the same religion and same views.
Creation...fake, the flood...fake, Adam+Eve...fake, Jesus...fake.
Conclusion...man made "god"...😉😉😉
catholic? you mean you have cat addiction?
@@randomannoyance lmao from a supposed Orthodox Christian
@@denzelminimo1883 im very sorry if you take this stuff seriously
Thanks professor Dave for your efforts. Important and simple explanation. This is great
Another amazing series, thank you Professor Dave!
When I was on the Glomar Challenger for DSDP Leg 86, in 1982, we collected marine microfossil data for Project CLIMAP. Going models at the time had the Northern Hemisphere trending toward a cooling and glacial advance. Obviously we've blown that trend in a big way
So glad I can watch this videos. My catholic school doesn't talk about this kind of stuff, so I always need to learn on my own.
So why do you still go there?
@@40g33k Its not like I really get a choice. It doesn't matter much anyway since they won't be able to brainwash me into believing their bull crap
@@40g33k maybe his parents force him to go.
@@MacyMaranatha777 Before that, WIDEN OUT YOUR THINKING ABILITY.
@@MacyMaranatha777 Yeah yeah. You are the most truthful person in the world. The World was created around 6000 years ago. Dinosaurs were leftovers from Noah's ark.
Love this series.
I do love these bite sized chunks of science goodness.
Thanks, Dave.
This really helped me from my report in Earth Science since the topic is History of Earth.
This is really helpful for me, because our biology sir taught us about this time line but I couldn't imagine any of them but this vedio really gave me a idea how is it look like...thank you...
Great videos, great for review too.
Thank you ! you make learning so much fun 😄😄😄
I just watched the last video of geology,then suddenly this video came I think I'm first
Homo Sapiens Sapiens looking like Gigachad at 1:25, proving that we peaked 300k years ago.
Thank you for this video, very great series. Correct me if I’m wrong but during the Mesozoic Earth was in a hot house due extremely high levels of CO2 (much higher than today), when the late Cretaceous-Paleogene mass extinction event yes there was an impact winter caused by the asteroid but it only lasted a few decades (so a blink of an eye in geologic time but still very important) and for the next few million years Earth entered a even hotter hot house known as the Paleocene-Eocene Thermal Maximum due to even higher co2 levels. And I know you explained it in this video of your series as things such as the creation of mountain ranges and chemical weathering as long with changes in ocean currents cooled earth and started sucking co2 into the oceans leading to global cooling and starting the current Quaternary ice age which we have been cycling in and out of glacial-Interglacial cycles due to Milankovitch Cycles and changes in co2 levels.
I think that’s very interesting and really puts our modern warming in perspective and how much humans could really warm this planet of action isn’t taken.
Thank you i learn so much
Excellent
Woohoo, anthropology here we come!
Professor Dave will you please make a video on the Younger Dryas impacts and it's effects on species extinctions and global water level rise. Thanks.
As much as I like this hypothesis, it is not widely accepted as science fact. There needs to be more study to accurately determine the age of the hyowatha impact craters. The so called "real" scientists picked up a bit of sediment from the run-off and said that the impacts occurred around 55 million years ago. As far as I'm concerned, that didn't prove anything.
Great content, as usual ! Just a small note, kiloannum should be labelled as «ka», not «Ka», as prefix kilo is represented by a lowercase «k».
What a cool series of videos, good job Dave! Are you sure the earths not flat? 🤪
Man u r just amazing you have knowledge about this also.😃
Provision dave thank you
Love how you included that we're still technically in an ice age. That really drives hime the point that it isn't normal to have global temperatures changing this rapidly. So rapidly that the jet stream is permanently changed for the rest of human existence and will probably end up being partly responsible for our extinction.
The Thermohaline also gives us glaciations. The prime example is 12,900 years ago when it collapsed and we were hit with the Younger Dryas Extinction Event.
👩🎓 love learning new things.
Nice video prof. If possible, can you do a series on paleobiology and evolution? Might be fascinating.
Just a suggestion.
@@MacyMaranatha777 Yeah, and you probably live on a flat earth. Glacial tills and Mesozoic marine fossils resulted from Noah's flood, and you were brought to this world in a bag by a big white crane.
Or a stork, perhaps, in your case.
I'm a grown-ass man but that opening jingle tickles me every time. 😁
Professor, is Altiatlasius the common primate ancestor since it was the first primate? or was the common primate ancestor some other animal?
It is still heavily debated as to what the first primate was, we have Plesiadapis, Altiatlasius, along with Purgatorius and other possible first primates.
However many paleontologist have been very… Skeptical on this topic.
He professor dave, i had a question, which one of your playlists should i start with?
Depends what you want to learn! But usually chemistry.
Thank you
Hi professor ☺️
Have exam tmrw and this helped me 👋😁😁
@JZ's Best Friend yeah ☺️
It's NOT evolution.. it's creation.
Why are there still apes..have they missed "evolution"? 😂
Excuse me "Professor" Dave.. what about the dinosaurs that were living with the first humans at exactly 6000 years ago when the earth was made... Dr. Kent Hoven told me all about it last week when he struck up a conversation in the Walmart bathroom.. that was the weirdest 5 hrs I have experienced.... Hahaha
It's amazing how much we're capable of finding out about everything ... hooray for science!
@@bozidarferfolja5702 Why not?
@@bozidarferfolja5702 Why is it pseudo science?
@@bozidarferfolja5702 Why not? You still haven't said anything lol.. being a little evasive not having an argument eh? :)
@@bozidarferfolja5702 So you're not going to tell me what about this video isn't science LOL? 🙂
Science.. lol
Why are there still many apes.. have they missed the "evolution"? 😂
Vincent trocheck you’ve got a big game 6 in Boston to worry about enough of the earth history
Hi is anyone available for a question ?
3:26 I am sorry but the Pacific Ocean is connected to the Caribbean Sea , not the Atlantic Ocean through the Panama Canal profesor Dave
There was no Caribbean sea then, bud.
I thought the consensus was that we are now in an extinction event that will define the beginning of the "Anthropocene" Epoch?
i have a Question: how is the age determined?
Primarily through radiometric dating.
@@ProfessorDaveExplains thank you. I Just Had this Question because someone claimed you can go with the C-14 method Just 2-12000 years back
Yeah we don't do it with carbon, that's only good for 50,000 years or so. We use many other nuclides. K/Ar, U, etc. Many different nuclides can be used, and also compared to corroborate values.
@@ProfessorDaveExplains so it really was Just an Idiot saying everything Else is Just speculation. Thank you
Mammal Time! 🤩
14.like
Yah forgot about the Decon Traps which started 22 million years before the Comet 65 million years ago
Hey so I know this is more of a science communication channel, however I saw the “debate” with Jessie lee and it got me thinking what is the longest running snake oil type thing out there? The bible, I know this isn’t a anti apologetics channel, but maybe it’s worth taking a shot at the contradictions spread throughout it with the intent of stopping people from associating it with science. Not disproving it but just how it doesn’t fit into science and using it for anything scientifically credible is bull. Thanks
History of the Earth Part 5
- Çatalhöyük
- Sumer
- Ancient Egypt
that'll be in the world history series coming very soon
@@ProfessorDaveExplains cool can't wait
Dave, I don't think you think Neanderthals are our ancestors. Perhaps the visual showing they are is a little misleading..
Yeah it's just the way that diagram is set up, it's not perfectly linear.
@@ProfessorDaveExplains
Well, as long as you're aware you're gonna get flak on it.
Theists, you know..
No no no noooo the earth....the earth......this makes so much sense. Why did i fellow a fairytale book?
A time tome.
1:19 Oh my gosh does he actually have Neanderthals between Homo Erectus and Homo Sapiens? How could he make such an error?
I didn’t make that graphic. You don’t have to take it as precisely linear.
1:20 Hey, Dave I just want to say that this picture isn't really correct because the neanderthals aren't our direct ancestors. We both come from homo erectus, yes, but neanderthals evolved based on their environment (they mostly lived in cold Europe) and homo sapiens lived in Africa. They even lived both at the same time. Our direct ancestors are Cromagnons. Neanderthals were physically stronger and more endure because they lived of hunting while homo sapiens lived of plants mostly. They had more developed back of the brain which is for vision, while homo sapiens had more developed top part of the brain which is for social skills. Neanderthals weren't much social. They just lived in families while homo sapiens lived in groups of up to 200 people.
I think it’s better to look at evolution as a tree branch or a bush rather than a straight line.
💚
At 1:24, when you assert humans evolved in Africa, is this based on assumptions from the 1960's, or actual evidence from human and pre-human fossils found in Africa, showing a continuous evolution to modern man?
Evidence. I’m starting an anthropology series. Watch it.
Thank you for saying Tibet instead of China.
😊👏
In moro a human have 3,5m
I don't understand why after the asteroid killed the dinosaurs, more dinosaurs didn't evolve since dinosaurs were there at the beginning before the asteroid. Also Why did a whole different species of animals start to evolve after the asteroid but different species of animals didn't evolve during dinosaurs.
Once a branch of life specializes, there’s no going back to generalized forms. Your children will have characteristics of all your ancestors, but won’t be exactly like any of them.
So extinctions reduce overall diversity that we can’t get back, ever.
Also, when organisms go extinct, other organisms will change to take advantage of the niches they leave empty.
Once that’s happened, they won’t give up that niche. For instance, if a sauropod had emerged again in the Miocene, it couldn’t have competed with Miocene mammals who were adapted for cooler, drier conditions.
Dinosaurs did evolve, through. One line that was suited for conditions in a colder, drier world, became birds.
Evolution is happening all the time. Dinosaurs very definitely were radiating out on various evolutionary paths during the time that they dominated. As was all other life.
[1:20] Can you please not use versions of "The March of Progress", the 1960s artwork showing an erroneous, linear progression of human evolution..?
i simp for professor dave
He knows all about the science and stuff, Professor Dave explains～ The intro is brainwashing my gosh xd
Um, or is it just basic scientific knowledge everyone should know?
@@ProfessorDaveExplains ignorance is indeed a choice
Brainwashing in what sense? You believe the Earth is 6000 yrs old?
Let's see... Whom to believe? Troll high schooler who is impressed with ambidexterity, or Professor Dave, who has taught science and published a book on how to sniff out trolling pseudoscience on the internet. It's a tough choice, but I'm going with Professor Dave. Back to your two-handed drawing, troll. Hope you make out of high school so you at least have a shot at Stanford, but I'm not betting on it.
@@ProfessorDaveExplains Oh wait I meant to say the intro is brainwashing lol it keeps repeating in my head xd
We must wident the panama canal and re gain the ocean warm current to the north! Oh but wait, we are fighting global warming. We must stop the ocean currents to cool the earth I mean. Thats what we need to do.
Nam mô cao đài tiên ông đại bồ tát ma ha tát thường hằng Nam mô cao đài tiên ông đại bồ tát ma ha tát thường hằng Nam mô cao đài tiên ông đại bồ tát ma ha tát thường hằng
Hey Prof when are you gonna take another swing at some flat earthers?
I think he's pretty much done with them.
@@iexist.imnotjoking5700 I think you're right. It's just fun watching flat earthers puff and blow trying to refute him.
Kent Hovind says this is all trash?
He would. He's a YEC goon.
Hi Dave, do think that the human species will still exist in 1000 years from now? I mean all the damage or destruction humans have done to the planet earth in the last 300 years is not a good sign for a bright future. It looks more like that humans working towards their own extinction. No asteroids etc needed to wipe out the human species.
I hope so and I believe so but I don't know for sure!
@@ProfessorDaveExplains Kurzgesagt's new video on climate change brought my hopes up a bit.
Btw, what's your opinion on Kurzgesagt?
As far as I know they are solid and good at simplifying things without horribly misrepresenting them, though I really haven't watched much of their content.
First UA-cam is right: recommends youw Videos to me
UA-cam now: are you interested in christianity
Great series. It realy puts into perspective how much the earth actually changes over time, and how the large changes back then make the modern changes of c02 levels seem kinda ridiculous and just kinda lost in the wash.
It's really amazing how we could cause change that would normally happens on the scale of tens to hundreds of thousands of years, to happen in just a few hundred years. And unintentionally no less.
Makes me wonder what mankind could do if we actually came together and put our minds to it.
@@WanderTheNomad There were trees growing in the Arctic 6000 years ago when global CO 2 levels were near 250 PPM
@@erikmoore7402 Seems like trees will be able to grow in the Arctic again soon.
@@WanderTheNomad You're missing the point though aren't you? The fact there was no ice in the Arctic when CO2 was at 250PPM shows cleary that co2 does not dictate temperature. Does it not?
@@erikmoore7402 Are you talking about global average temperatures or just the temperature around the Arctic? Or do you consider them the same?
19th comment
somewhere some tv exec should be getting fired for having not signed professor dave up, great communicator.
Professor Dave is hot.
Professor Dave believes in humans evolving from animals???
Humans are animals.
@@ProfessorDaveExplains doesn't substantiate we are related to chimps
All living organisms are related. All.
Where's that science jesus 😖
Homosapiens emerge 200-300 years in Africa, but for some reason they had skin color like Brad Pitt? 🤔🤔
Evidence for that?
Well if you knew, homosapiens from Africa traveled and adapted to different parts of world.
@@Lumalee I believe they are referencing the graph used, which is fairly default in nature. Whiteness in the human tone dodnt really evolve until we began spreading north into colder territories and lost the need for the pigmentation, if i recall correctly.
Evem Jesus was a dark skinned Jew. Otherwise that would have been much more of a conversation piece for the area than fish and bread, i'm sure.
@@ProdWowEthan The humans that migrated out of Africa were dark-skinned. That's when light skin evolved to maximize vitamin D synthesis.
Waiting on flat earth comments 🤔🤪🤪
Yooooooo change your intro my gee we're not in nursery class
My intro is dope.
India is a Continent ... Europe is a subcontinent!
Yeah right, and I can levitate if I want to
@@thetimso2819yeah right... Europe is a "Continent". European food is "Continental"!
I here by decree that India is a Continent 👏
Indian Continent Rammed into Eurasian Continent... we can separate if we want to!
Tibet/ Kailash Plateau too included
@JZ's Best Friend🤚😇👍
how much u get paid for talking nonsense on here
This is basic geology information, sweetie. Try and learn something.
@Dilbobaggins How much does Putin pay you to make people stupid?