It's very interesting to think about how important random chance has been in understanding dinosaurs. The right fossils, at the right times, emerging to be seen by the right people with the right scientific knowledge. That's a lot of things to have to go right! And I'm very glad that they did and that you all do such a brilliant job telling us about them!
Right. A huge chunk of their diversity is lost to us. You will see the same fossil beds mentioned over and over again. Our picture of the Mesozoic comes from a hand full of peepholes at particular times and places. And then there are environments unlikely to produce fossils at all that come times have the most odd creatures. The deep sea and small volcanic islands tend to get recycled into the crust.
I got to imagine too, we simply weren't looking for them before we built our cities on the east coast. A lot of major cities on the east coast were established before we the 1st dino bones were discovered unlike the west coast. Who knows how many are under Philly or Boston that people may have seen and just threw out not knowing what they were
On top of that, when the Atlantic Ocean opened almost right under the future sites of those cities, how many early dino fossils did that obliterate? The very hard igneous traprock formations throughout the NYC area (including those big rocks throughout Central Park and the New Jersey Palisades) and New England are testament to the geological violence of that event.
A few years ago I walked a couple miles into Gettysburg to see the Dinosaur Bridge- A small footbridge with dinosaur tracks in the stones used to build it. I was amazed to find the stones had been sourced from a quarry only a few miles away- I had assumed they came from far out of state. The only fossils I'd ever been familiar with from my state were plant or marine. It was exciting to learn we had so much more!
I would like to add a few things that I personally have learned when doing my research on Appalachian Biodiversity. For one the Newark Supergroup, while not containing a massive number of animals, has preserved several Aetosaurs, Psuedosuchians, and a few Archosauromorphs such as Rutiodon, Hypuronector (a weird little drepanosaur with a leaf shaped tail), Doswellia, Lucasuchus, Carnufex, and a unique species of Postosuchus (P. alisonae). Additionally in the Portland formation, there have been very few but interesting fossils that did preseve. Such as Podokesaurus, which was lost in a fire in 1917, Anchisaurus, which we have more than a handful of fossils from, as well as two interesting recent finds. One being the distal end of a humerous from a Theropod, which is more similar to the ones found in Crylophosaurus, than Dilophosaurus, as well as being much larger and denser than both of theirs. As well as the wrist bone of a Non-pterodactyloid Pterosaur, which is uniquely dense for a pterosaur wrist, potentially meaning it could be a forest dwelling pterosaur opposed to the more typical oceanic pterosaurs we know. Meanwhile the Late Cretaceous fossil beds are very interesting. As deinosuchus appears to be present throughout most of them, whereas the two know Appalachian large carnivores from the late cretaceous are rather small, with one Appalachisaurus fossil having Deinosuchus bite marks on it. Potentially pointing to Deinosuchus being the dominant predator of costal Appalachia during the Cenomanian. However because we are lacking a massive amount of Western Appalachian fossils with only a tantalizing amount from bloat and float specimens. We have no clue what lived in the western plains of Appalachia aside from a few scarce Hadrosaur and Nodosaur fossils. Speaking of Hadrosauroids, Appalachian Hadrosaurs appear to be split into three distinct groups. Small bodied Hadrosaurs such as Claosaurus which were 6 meters long or shorter. Medium sized Hadrosaurs such as Hadrosaurus which were anywhere from 6-10 meters long. And Edmontosaurus sized Hadrosauroids with the current only known examples of Parrosaurus and Hypsibema, which could be anywhere from (12-19) meters long. These massive Appalachian Hadrosauroids also have had a difficult problem in their placement on the hadrosaur family tree, potentially pointing to them forming their own distinct group of Appalachian Hadrosauroids. This refugia appears to have come to an end some time during the Maastrictian, as begining in Maastrictian age rocks, we have found distinctly Laramidian fauna. Such as a Ceratopsian tooth crown being found in Missouri. Or there being quite a few lambeosaur and saurolophine fossils being discovered in New Jersey. While the Hadrosauroid fossils at the same time appear to have become rarer. Though that might be because it is a costal enviroment with its own bias. Additionally an extremely fragmentary Lambeosaur, Hadrosaurid, and Tyrannosaur fossils was discovered in Maastrictian age rock from Nunavut Canada, showing just a glimpse into Arctic Appalachian fauna, though it is even more fragmentary than most Appalachian dig sites, which is saying a lot. I felt like adding this merely because I have become extremely interested in Appalachian fauna, especially since it so rarely gets covered at all. Despite us having at least two decent bone beds in Missouri and North Carolina. Them being the Tar Heel/ Coachmen Formation of North Carolina which has a wealth of fossils preserved with at least three Hadrosaurs, a Leptoceratopsid jaw, two Tyrannosauroids (Appalachiasaurus and a Dryptosauroid), two dromeosaurs (Saurornitholestes and a Deinonychus sized Dromeosaur), and some Nodosaur and Deinosuchus remains, and a still unamed Missouri bone bed that has preserved a Parrosaurus nesting ground, along with some fragmentary Tyrannosaur, Dromeosaur, and Ornithomimid remains. Sure Appalachian fauna are generally terribly preserved on account of most being sea deposits. But I think this video is a great way for people to start learning about Appalachian fauna. I just wanted to add some of what I know about them from just learning about them in my own time.
So it's kinda like not seeing your old school buddies for a long time, and then when you finally see them again, they look pretty much exactly like you left them. Meanwhile, you've turned into a big T-rex...
Is it also possible that the early Appalachian Mountains also played a role in isolating dinosaurs to the east of them before the Interior Seaway opened? Remember, they were once the size of the Himalayas.
When I was a youth, paleontologists were in the habit of speaking in absolutes. They would say things like "Dinosaurs were slow and cold blooded" and "Not related to birds." This language seriously undermined their credibility. I'm glad this has been recognized and the language replaced with more flexible choices.
NOTE: tyrannosaurs from Appalachia are NOT tyrannosaurids but dryptosaurids Basically what you get when take megaraptorids and give them few tyrannosaurid traits So far only 2 dryptosaurids are named: Dyptosaurus and unofficially Cryptotyrannus, maybe if Appalachiosaurus was dryptosaurid, it would be third But there's probably 3 or 4 other that are still undescribed or unnamed, simply refered to as Dryptosaurus (same as every theropod was Megalosaurus 100+ years back), 1 of them was probably about same size as Albertosaurus, thats huge for dryptosaurid for as far as we know now
Oh that explains it. I made a dex for Tyrannosaurids as a personal project and didn’t recognize those names from the family, but I did recognize Dryptosaurus.
I assumed the geology was the reason so few dinosaurs are known from the east. I’ve been collecting fossils since I was kid and living in the Mississippi basin, everything I find consist of bivalves, crinoids and the like. Either the Jurassic layer is eroded away or hasn’t been uplifted to the surface.
Hey Bud. Just here to tell you that I appreciate you. Edit: What happened when the Interior Seaway got uplifted? Did the West Coast Dinos totally destroy the East Coast Dinos or did different niches stay and thrived?
The western interior seaway was uplifted in the early paleocene, so unfortunately after most dinosaurs were wiped off the planet following the K-Pg extinction event!
From what we do know, Laramidian dinosaurs appeared to have started taking over Appalachia during the Maastrictian. As we have Lauramidian Ceratopisan tooth from Missouri. Several Lambeosaur and Sauralophine fossils that out number the known Hadrosauroid fossils from the Maastrictian in New Jersey, though the Appalachain Nodosaurs seemed to have just not cared one way or the other as they are abundant throughout Cretaceous Appalachain fossil beds. And a Lambeosaur fossil found all the way up in Nunavut Canada, which is a formation that is super fragmentary by Appalachian standards, which would have been an contemporary of the Prince Creek Formation in Alaska. It appears that by the very end Appalachian fauna appeared to have been on the decline once the Sea just started to recline. Though take it with a grain of salt as we have only Coastal fossil formations for most Appalachian fossils (aside from the Newark Supergroup and Maryland fossils), so there could be a massive sampling bias for Laramidian hadrosaurs opposed to Appalachain Hadrosauroid which might have become more inland animals by the time Laramidian fauna started to migrate into Appalachia.
They appear to have been to some degree when the Sea Way started to shrink in the Maastrictian. As in Missouri we have a Laramidian Ceratopsian tooth, in New Jersey we have found more Lambeosaur and Saurolophine fossils than that of Hadrosauroids. And even in Nunavut Canada, which is also the only Cretaceous Appalachian fossil bed we have, we have found a Lambeosaur fossil along with Hadrosaurid and Tyrannosaur fossil. (I do mean fossil as they are all extremely fragmentary.) It could just be due to sampling bais, but with what we have right now it would appear that Appalachain fauna was on the decline during the Maastrictian (apart from Dryptosauroids which probably had a field day with all of the new Hadrosaurs.).
Is it possible that the geology of the east coast and west coast were similar to today? The east coast being generally more forested while the west having more open plains. Would it make sense that the evolution into larger dinosaurs was impacted by more open space while smaller versions could navigate more densely forested regions?
This was awesome. I propose you tackle why there are apparently no dinosaurs in areas like Indiana, but are rich in marine fossils from some 300mya. Thx!
You don't! You just have to look for different kinds of things. I live where there are a lot of dinosaur trackways but light on fossils. We don't choose the evolution that happened under our feet. In my case, I blame the formation of the Atlantic ocean.
We currently have some fossils in the Nova Scotia called the McCoy Brook Formation, from the Early Jurassic where we have at least one significant dinosaur fossil in the potentially dubious Fendusaurus, as well as some very fragmentary Ornithchian teeth, ribs, and a vertabrae and theropod teeth from something the size of Ceolophysi/ Megapnosaurus. Along with many different Synapsids and two pseudosuchians. Additionally we have Greenland fossils from the Late Triassic in the Fleming Fjord Formation, with two aetosaurs, a pterosaur in Arcticodactylus, along with Issi the currently only names dinosaur, though there are more fragmentary remains from Phytosaurs and Plateosaurs. And lastly I think, I could be very wrong there is also the Late Maastrictian Kanguk Formation which contains, 1 Lambeosaur fossil, 1 Tyrannosaur fossil, and 1 Hadrosaurid fossil and is the first recorded instance of Arctic Appalachain dinosaurs, though we know so little due to both geography and just poor sampling that it could be significanly better or worse than what we currently know.
@@sydhenderson6753 We currently have some fossils in the Nova Scotia called the McCoy Brook Formation, from the Early Jurassic where we have at least one significant dinosaur fossil in the potentially dubious Fendusaurus, as well as some very fragmentary Ornithchian teeth, ribs, and a vertabrae and theropod teeth from something the size of Ceolophysi/ Megapnosaurus. Along with many different Synapsids and two pseudosuchians. Additionally we have Greenland fossils from the Late Triassic in the Fleming Fjord Formation, with two aetosaurs, a pterosaur in Arcticodactylus, along with Issi the currently only names dinosaur, though there are more fragmentary remains from Phytosaurs and Plateosaurs. And lastly I think, I could be very wrong there is also the Late Maastrictian Kanguk Formation which contains, 1 Lambeosaur fossil, 1 Tyrannosaur fossil, and 1 Hadrosaurid fossil and is the first recorded instance of Arctic Appalachain dinosaurs, though we know so little due to both geography and just poor sampling that it could be significanly better or worse than what we currently know.
So what happened when the interior seaway disappeared? Did the western species take over and wipe out the rest? Or was there not enough time until the end of the cretaceous to know?
The two continents reconnected at the very end of the Cretaceous, so while there may have been brief interaction between the two before the extinction, we're looking for a very thin layer to try and fill in our information.
@4:00 Who ever drew that map of the inland sea really screwed up. The Rockies were only just starting to from in that time period and the Appalachian mts would have still had peaks.
They lived millions of years apart in time and never coexisted, humans started to evolve like ~8 million years ago and modern humans ~200,000 years ago, while non-bird dinosaurs went extinct during the KPG 66 million years ago, so they never lived together like in the Flintstones (unless were talking about birds- which are technically dinosaurs, and we have tons of examples in the fossil/archeological record of that lol)
While a T-rex on a unicycle is historically more accurate than a T-rex next to a Stegosaurus, there were still over 60 million years between T-rex and unicycles (or humans). As such, don't expect human bodies to ever end up next to dinosaur fossils and actually still see conditions that cause them to fossilize but not destroy the dinosaur fossils in the process.
I'm sure the erosion of the Appalachian mountains have covered up most fossils.. The WNC mountains once had like a crap load of Indian tribes, why do we never find any of their bones? Plus, I think the east coast climate was a bad climate for fossils to form...
I’ll be honest as a paleo-nerd who lives on the east coast & sometimes the mere thought of the lack of knowledge. About the paleo ecology on this side of the US always makes me sad honestly. 🥲
It's very interesting to think about how important random chance has been in understanding dinosaurs. The right fossils, at the right times, emerging to be seen by the right people with the right scientific knowledge. That's a lot of things to have to go right! And I'm very glad that they did and that you all do such a brilliant job telling us about them!
Right. A huge chunk of their diversity is lost to us. You will see the same fossil beds mentioned over and over again. Our picture of the Mesozoic comes from a hand full of peepholes at particular times and places. And then there are environments unlikely to produce fossils at all that come times have the most odd creatures. The deep sea and small volcanic islands tend to get recycled into the crust.
I'm not sure, but I'm blaming Suge Knight for the East Coast Dinosaurs deaths.
I understood that reference
I was gonna say they’re in Florida and D.C., but, your 30 year old music industry beef reference might be less inflammatory.
Actually it was Diddy 😂
That's a popular theory. Personally I subscribe to the idea of the P Diddy 'Baby Oil Event'.
What a horrible cataclysm to imagine.
Diddy did it
The east coast dinosaur roars were assumed to sound like “FOOORRRRRGEEETTTABBBBOUUUTTTIITTTT’
LOL, either that or an F-bomb
3:42 as someone who lives in Maryland, it's kind of an honor to have Acrocanthosaurus be discovered there
Fascinating! I’m an East Coaster and I’ve often wondered why we have found so few dinosaurs here.
Absolutely loving that Appalachia is just extremely weird even on a geological level.
Maybe the real east coast dinosaurs were the friends we made a long the way 🦖🦕
I got to imagine too, we simply weren't looking for them before we built our cities on the east coast. A lot of major cities on the east coast were established before we the 1st dino bones were discovered unlike the west coast. Who knows how many are under Philly or Boston that people may have seen and just threw out not knowing what they were
On top of that, when the Atlantic Ocean opened almost right under the future sites of those cities, how many early dino fossils did that obliterate? The very hard igneous traprock formations throughout the NYC area (including those big rocks throughout Central Park and the New Jersey Palisades) and New England are testament to the geological violence of that event.
Weathering a storm in the Philippines. Thanks for the entertainment in the meantime. 😊
Another idea of why we don’t find many dinosaurs from the east coast involved with the ice age glaciers
A few years ago I walked a couple miles into Gettysburg to see the Dinosaur Bridge- A small footbridge with dinosaur tracks in the stones used to build it. I was amazed to find the stones had been sourced from a quarry only a few miles away- I had assumed they came from far out of state. The only fossils I'd ever been familiar with from my state were plant or marine. It was exciting to learn we had so much more!
Maybe rent in NY was too high
Nico Robin being am Eontologist makes a lot of sense.
Perfect timing while I’m brewing my coffee!
New Mexico represent!!!!!!!!! 🦖💛❤️
All the dinosaurs I’ve seen on the east coast were down in Florida for the winter 😄
Ah yes the "snow-raptors" we could call them? Lol or something more fitting. I'm sure there's a better way to word it but you get the point 😂
This is so valid.
I would like to add a few things that I personally have learned when doing my research on Appalachian Biodiversity.
For one the Newark Supergroup, while not containing a massive number of animals, has preserved several Aetosaurs, Psuedosuchians, and a few Archosauromorphs such as Rutiodon, Hypuronector (a weird little drepanosaur with a leaf shaped tail), Doswellia, Lucasuchus, Carnufex, and a unique species of Postosuchus (P. alisonae).
Additionally in the Portland formation, there have been very few but interesting fossils that did preseve. Such as Podokesaurus, which was lost in a fire in 1917, Anchisaurus, which we have more than a handful of fossils from, as well as two interesting recent finds. One being the distal end of a humerous from a Theropod, which is more similar to the ones found in Crylophosaurus, than Dilophosaurus, as well as being much larger and denser than both of theirs. As well as the wrist bone of a Non-pterodactyloid Pterosaur, which is uniquely dense for a pterosaur wrist, potentially meaning it could be a forest dwelling pterosaur opposed to the more typical oceanic pterosaurs we know.
Meanwhile the Late Cretaceous fossil beds are very interesting. As deinosuchus appears to be present throughout most of them, whereas the two know Appalachian large carnivores from the late cretaceous are rather small, with one Appalachisaurus fossil having Deinosuchus bite marks on it. Potentially pointing to Deinosuchus being the dominant predator of costal Appalachia during the Cenomanian. However because we are lacking a massive amount of Western Appalachian fossils with only a tantalizing amount from bloat and float specimens. We have no clue what lived in the western plains of Appalachia aside from a few scarce Hadrosaur and Nodosaur fossils.
Speaking of Hadrosauroids, Appalachian Hadrosaurs appear to be split into three distinct groups. Small bodied Hadrosaurs such as Claosaurus which were 6 meters long or shorter. Medium sized Hadrosaurs such as Hadrosaurus which were anywhere from 6-10 meters long. And Edmontosaurus sized Hadrosauroids with the current only known examples of Parrosaurus and Hypsibema, which could be anywhere from (12-19) meters long. These massive Appalachian Hadrosauroids also have had a difficult problem in their placement on the hadrosaur family tree, potentially pointing to them forming their own distinct group of Appalachian Hadrosauroids.
This refugia appears to have come to an end some time during the Maastrictian, as begining in Maastrictian age rocks, we have found distinctly Laramidian fauna. Such as a Ceratopsian tooth crown being found in Missouri. Or there being quite a few lambeosaur and saurolophine fossils being discovered in New Jersey. While the Hadrosauroid fossils at the same time appear to have become rarer. Though that might be because it is a costal enviroment with its own bias.
Additionally an extremely fragmentary Lambeosaur, Hadrosaurid, and Tyrannosaur fossils was discovered in Maastrictian age rock from Nunavut Canada, showing just a glimpse into Arctic Appalachian fauna, though it is even more fragmentary than most Appalachian dig sites, which is saying a lot.
I felt like adding this merely because I have become extremely interested in Appalachian fauna, especially since it so rarely gets covered at all. Despite us having at least two decent bone beds in Missouri and North Carolina. Them being the Tar Heel/ Coachmen Formation of North Carolina which has a wealth of fossils preserved with at least three Hadrosaurs, a Leptoceratopsid jaw, two Tyrannosauroids (Appalachiasaurus and a Dryptosauroid), two dromeosaurs (Saurornitholestes and a Deinonychus sized Dromeosaur), and some Nodosaur and Deinosuchus remains, and a still unamed Missouri bone bed that has preserved a Parrosaurus nesting ground, along with some fragmentary Tyrannosaur, Dromeosaur, and Ornithomimid remains.
Sure Appalachian fauna are generally terribly preserved on account of most being sea deposits. But I think this video is a great way for people to start learning about Appalachian fauna. I just wanted to add some of what I know about them from just learning about them in my own time.
Seems like Appalachia has always been a place to preserve ancient weird culture and creatures.
Thank you for making this! I really hope we find out more about Appalachia in the future, it's too interesting to not want to learn more about.
So it's kinda like not seeing your old school buddies for a long time, and then when you finally see them again, they look pretty much exactly like you left them. Meanwhile, you've turned into a big T-rex...
🎵Laramidia, Dinosaur Big City🎵
Thanks for all the hard work on these videos!
Sweet, new dino stuff
2 hours ago is crazy, I’m obsessed with this channel;
I wonder if egg eating mammals were more dominant on the eastern side.
A dinosaur themed night at the museum type event would be pretty cool
Is it also possible that the early Appalachian Mountains also played a role in isolating dinosaurs to the east of them before the Interior Seaway opened? Remember, they were once the size of the Himalayas.
When I was a youth, paleontologists were in the habit of speaking in absolutes. They would say things like "Dinosaurs were slow and cold blooded" and "Not related to birds." This language seriously undermined their credibility. I'm glad this has been recognized and the language replaced with more flexible choices.
Thank you for the special message regarding native peoples.
What are the evidences on the eastern coast up north in Canada?
They are there. The east coast is mostly older fossils but theres plenty of dinosaur tracks
Appalachia, doing its own thing since before it was (geologically) cool.
NOTE: tyrannosaurs from Appalachia are NOT tyrannosaurids but dryptosaurids
Basically what you get when take megaraptorids and give them few tyrannosaurid traits
So far only 2 dryptosaurids are named: Dyptosaurus and unofficially Cryptotyrannus, maybe if Appalachiosaurus was dryptosaurid, it would be third
But there's probably 3 or 4 other that are still undescribed or unnamed, simply refered to as Dryptosaurus (same as every theropod was Megalosaurus 100+ years back), 1 of them was probably about same size as Albertosaurus, thats huge for dryptosaurid for as far as we know now
Oh that explains it. I made a dex for Tyrannosaurids as a personal project and didn’t recognize those names from the family, but I did recognize Dryptosaurus.
Have we considered that time travelers may have picked up the whole Appalachian subcontinent and redeposited it fifty million years later?
Sorry about that,lol
New Mexico represent ✊
One of the few channels I put on notification ❤
I am so happy that Appalachian dinosaurs are getting attention. theven wrote a book about them to try and get more people into the subject.
In New Jersey we may not have a lot of dinosaurs, but there's several places where you can find a ton of shark teeth fossils.
Ankylosaurus ftw!
Also, appreciate the reminder that indigenous people aren't consulted or involved with science digging like this in areas they live.
I assumed the geology was the reason so few dinosaurs are known from the east. I’ve been collecting fossils since I was kid and living in the Mississippi basin, everything I find consist of bivalves, crinoids and the like. Either the Jurassic layer is eroded away or hasn’t been uplifted to the surface.
Hey Bud. Just here to tell you that I appreciate you.
Edit: What happened when the Interior Seaway got uplifted? Did the West Coast Dinos totally destroy the East Coast Dinos or did different niches stay and thrived?
The western interior seaway was uplifted in the early paleocene, so unfortunately after most dinosaurs were wiped off the planet following the K-Pg extinction event!
From what we do know, Laramidian dinosaurs appeared to have started taking over Appalachia during the Maastrictian. As we have Lauramidian Ceratopisan tooth from Missouri. Several Lambeosaur and Sauralophine fossils that out number the known Hadrosauroid fossils from the Maastrictian in New Jersey, though the Appalachain Nodosaurs seemed to have just not cared one way or the other as they are abundant throughout Cretaceous Appalachain fossil beds. And a Lambeosaur fossil found all the way up in Nunavut Canada, which is a formation that is super fragmentary by Appalachian standards, which would have been an contemporary of the Prince Creek Formation in Alaska.
It appears that by the very end Appalachian fauna appeared to have been on the decline once the Sea just started to recline. Though take it with a grain of salt as we have only Coastal fossil formations for most Appalachian fossils (aside from the Newark Supergroup and Maryland fossils), so there could be a massive sampling bias for Laramidian hadrosaurs opposed to Appalachain Hadrosauroid which might have become more inland animals by the time Laramidian fauna started to migrate into Appalachia.
They appear to have been to some degree when the Sea Way started to shrink in the Maastrictian.
As in Missouri we have a Laramidian Ceratopsian tooth, in New Jersey we have found more Lambeosaur and Saurolophine fossils than that of Hadrosauroids. And even in Nunavut Canada, which is also the only Cretaceous Appalachian fossil bed we have, we have found a Lambeosaur fossil along with Hadrosaurid and Tyrannosaur fossil. (I do mean fossil as they are all extremely fragmentary.)
It could just be due to sampling bais, but with what we have right now it would appear that Appalachain fauna was on the decline during the Maastrictian (apart from Dryptosauroids which probably had a field day with all of the new Hadrosaurs.).
Is it possible that the geology of the east coast and west coast were similar to today? The east coast being generally more forested while the west having more open plains. Would it make sense that the evolution into larger dinosaurs was impacted by more open space while smaller versions could navigate more densely forested regions?
Wow, I'm early. I just typed pbs eons in RUclips search
"Where are all the east-coast dinosaurs?"
Florida.
This was awesome. I propose you tackle why there are apparently no dinosaurs in areas like Indiana, but are rich in marine fossils from some 300mya. Thx!
I kept expecting you to mention Madagascar as a modern refugium.
I met a grad student at KAS that was studying the one Cretaceous outcrop in Kentucky, they hadn’t found anything yet but…. One day
Dinosaur 🦕 amazing ☺️☺️
I Was just at the Smithsonian and yea everyone should try to see that place at least once
I feel as if my prayers have been answered. Finally, one of the big paleo channels talks about Appalachia.
How do the fossil beds south if St Louis fit into this?
They didn't emigrate to the Delta Quadrant?
Why must you remind me i live in a dinosaur fossil dead zone?
You don't! You just have to look for different kinds of things. I live where there are a lot of dinosaur trackways but light on fossils. We don't choose the evolution that happened under our feet. In my case, I blame the formation of the Atlantic ocean.
Missouri’s hadrosaur is even crazier than your examples.
Thank you for the texts in Turkish with automatic translation.
I am Turkish
What's with all the "stars" floating around the dinosaur images?
Wasn’t the Western interior Seaway pretty much gone in the north by end?
Is there a possibility that the right rock formation can be found in the future?
Maybe the real east coast dinosaurs were the friends we made along the way
Simply dig more
What about that other island in the north, in I guess where is now in Canada?
New York has very few dinosaurs.
I think my area here in west Virginia is more ordovician
In Washington?
Did that large island north of Appalachia have its own special lineages.
We currently have some fossils in the Nova Scotia called the McCoy Brook Formation, from the Early Jurassic where we have at least one significant dinosaur fossil in the potentially dubious Fendusaurus, as well as some very fragmentary Ornithchian teeth, ribs, and a vertabrae and theropod teeth from something the size of Ceolophysi/ Megapnosaurus. Along with many different Synapsids and two pseudosuchians.
Additionally we have Greenland fossils from the Late Triassic in the Fleming Fjord Formation, with two aetosaurs, a pterosaur in Arcticodactylus, along with Issi the currently only names dinosaur, though there are more fragmentary remains from Phytosaurs and Plateosaurs.
And lastly I think, I could be very wrong there is also the Late Maastrictian Kanguk Formation which contains, 1 Lambeosaur fossil, 1 Tyrannosaur fossil, and 1 Hadrosaurid fossil and is the first recorded instance of Arctic Appalachain dinosaurs, though we know so little due to both geography and just poor sampling that it could be significanly better or worse than what we currently know.
@@sydhenderson6753 We currently have some fossils in the Nova Scotia called the McCoy Brook Formation, from the Early Jurassic where we have at least one significant dinosaur fossil in the potentially dubious Fendusaurus, as well as some very fragmentary Ornithchian teeth, ribs, and a vertabrae and theropod teeth from something the size of Ceolophysi/ Megapnosaurus. Along with many different Synapsids and two pseudosuchians.
Additionally we have Greenland fossils from the Late Triassic in the Fleming Fjord Formation, with two aetosaurs, a pterosaur in Arcticodactylus, along with Issi the currently only names dinosaur, though there are more fragmentary remains from Phytosaurs and Plateosaurs.
And lastly I think, I could be very wrong there is also the Late Maastrictian Kanguk Formation which contains, 1 Lambeosaur fossil, 1 Tyrannosaur fossil, and 1 Hadrosaurid fossil and is the first recorded instance of Arctic Appalachain dinosaurs, though we know so little due to both geography and just poor sampling that it could be significanly better or worse than what we currently know.
Appalachia… The Australia of North America.
Did dinosaurs evolve the ability to dream? 🦕🤯
Dinosaurs: WEST SIDE
So Appalachia was weird and wacky, even back then. Seems legit. 😛
Megabias? No. They were engaged in a hip hop feud and the east lost.
What happened was, they went digital. So, when the asteroid hit, they lost all their records.
So what happened when the interior seaway disappeared? Did the western species take over and wipe out the rest? Or was there not enough time until the end of the cretaceous to know?
The two continents reconnected at the very end of the Cretaceous, so while there may have been brief interaction between the two before the extinction, we're looking for a very thin layer to try and fill in our information.
The sea closed up right after the Cretaceous.
I ish little dinky dinosaurs got more love
🦕
East Coast Dinosaur Evolution was washed away.
4 views in 58 secs :/
I heard ankysaurus (the early sauropod) as angysaurus and was like aww why he angy
East side iz da best!
I have ALWAYS been curious about this! Thank you for reading my mind 😊
Hi
the worlds most unpleasant mispronunciation
Yo yo yoooooo
US politicians
No comments yet. Im too early.
Tks
@4:00 Who ever drew that map of the inland sea really screwed up. The Rockies were only just starting to from in that time period and the Appalachian mts would have still had peaks.
🎉
4th
Why Don’t We Find Human & Dinosaur Fossils Together?
They lived millions of years apart in time and never coexisted, humans started to evolve like ~8 million years ago and modern humans ~200,000 years ago, while non-bird dinosaurs went extinct during the KPG 66 million years ago, so they never lived together like in the Flintstones (unless were talking about birds- which are technically dinosaurs, and we have tons of examples in the fossil/archeological record of that lol)
You are kidding right?
Dinosaurs were extinct long before humans arrived on the evolutionary scene. Would have been pretty cool, though.
While a T-rex on a unicycle is historically more accurate than a T-rex next to a Stegosaurus, there were still over 60 million years between T-rex and unicycles (or humans). As such, don't expect human bodies to ever end up next to dinosaur fossils and actually still see conditions that cause them to fossilize but not destroy the dinosaur fossils in the process.
I'm sure the erosion of the Appalachian mountains have covered up most fossils.. The WNC mountains once had like a crap load of Indian tribes, why do we never find any of their bones? Plus, I think the east coast climate was a bad climate for fossils to form...
I’ll be honest as a paleo-nerd who lives on the east coast & sometimes the mere thought of the lack of knowledge. About the paleo ecology on this side of the US always makes me sad honestly. 🥲