A really good look at this fantastic creature. A lot of other videos don't go into enough detail into individual animals, but this was excellent. Thanks for putting it together.
Great video, found a mistake though, 7:48 you state that all dinosaurs couldn't chew, Hadrosauids were famously extremely efficient chewers with hundreds of teeth arranged in batteries, ceratopsions also had this and other ornithopods also had many adaptations for chewing. Sauropodomorphs likely didn't chew their food, however some like Lufengosaurus have a bony ridge on their upper jaw which might have supported large cheeks which might imply that there was some kind of limited oral processing but that last bit is just speculation.
By chew, I meant muscled lateral movement of the lower jaw, which no archosaur seemed able to have done. Many dinosaurs had cheeks to hold in food to be ground by the teeth, but this was not chewing. Hadrosaurs were ingenious by using hinges in their skulls to press and grind the teeth together by just moving the jaw up and down (I go into detail in my Iguanodon video). While dinosaurs had many ways of processing food, I do not count any as strict ‘chewing’ due to the exclusively vertical movement of the jaw.
@@palaeo_channel I do get what you’re saying and you’re absolutely correct. But saying they didn’t chew implies that they did not process food in their mouths at all. It’s like saying they didn’t have cheeks because they aren’t muscled like mammal cheeks. Sure they are structurally different but they accomplish the same basic task. If you wanted to draw a distinction I would say they lacked a mammalian chewing system, rather than saying they couldn’t chew at all.
While you do have a point with some ornithischians, like hadrosaurs, there is no evidence that Plateosaurus had cheeks. All of its teeth were for cutting and it did not do any processing of food in its mouth. Much like later sauropods, it would have bitten off vegetation and swallowed it whole, letting it ferment in its gut and be broken down that way.
Maybe when bending down, but the knuckles were not built for supporting weight. If you find this interesting and want to look into it, the paper can be found at: www.app.pan.pl/archive/published/app55/app20090075.pdf
Turning scales into filaments probably began around 250 million years ago in the Lower Triassic before dinosaurs split from pterosaurs. Both groups have members showing these kind of hair-like 'feathers'. You would probably have what we would recognise as feathers showing up in some dinosaurs around 165 million years ago. There is no evidence that some dinosaurs like sauropods ever had feathers, and most were probably still scaly. I actually have a feathers video that I am doing some work on.
were hadrosaurs not able to chew? Granted they came much much later, but I was just wondering about the statement "Like all dinosaurs plateosaurus could not chew"
@@palaeo_channel isn’t that chewing though? Pardon my ignorance but what would be the difference in the way/intent of the way hadrosaurs did it compared to mammals? Grinding surfaces that worked the food?
@@stalker1983 Chewing is grinding food by the lower jaw moving side to side and back and forward, which archosaurs cannot typically do. Ornithopods had a work around by moving their jaws up and down in a specialised way. I do have an Ornithopod in my schedule that should clear thing up.
You are criminally undersubscribed.
As a German I can say your pronunciation of German words is pretty good.
A really good look at this fantastic creature. A lot of other videos don't go into enough detail into individual animals, but this was excellent. Thanks for putting it together.
I remember and old dinosaur book also referring to this animal as "Yalesarus" .
THIS is the content i‘m looking for
I'm glad I found and subbed to you. I needed more channels to follow that cover ancient critters like you do. I love the subject matter! 😍
Fantastic video, well edited. Looking forward to your future videos
can you please do carnotaurus next please it’s my favorite dinosaur
Great video, checking out the rest of your channel for sure :)
Great video, found a mistake though, 7:48 you state that all dinosaurs couldn't chew, Hadrosauids were famously extremely efficient chewers with hundreds of teeth arranged in batteries, ceratopsions also had this and other ornithopods also had many adaptations for chewing. Sauropodomorphs likely didn't chew their food, however some like Lufengosaurus have a bony ridge on their upper jaw which might have supported large cheeks which might imply that there was some kind of limited oral processing but that last bit is just speculation.
By chew, I meant muscled lateral movement of the lower jaw, which no archosaur seemed able to have done. Many dinosaurs had cheeks to hold in food to be ground by the teeth, but this was not chewing.
Hadrosaurs were ingenious by using hinges in their skulls to press and grind the teeth together by just moving the jaw up and down (I go into detail in my Iguanodon video).
While dinosaurs had many ways of processing food, I do not count any as strict ‘chewing’ due to the exclusively vertical movement of the jaw.
@@palaeo_channel I do get what you’re saying and you’re absolutely correct. But saying they didn’t chew implies that they did not process food in their mouths at all. It’s like saying they didn’t have cheeks because they aren’t muscled like mammal cheeks. Sure they are structurally different but they accomplish the same basic task. If you wanted to draw a distinction I would say they lacked a mammalian chewing system, rather than saying they couldn’t chew at all.
While you do have a point with some ornithischians, like hadrosaurs, there is no evidence that Plateosaurus had cheeks. All of its teeth were for cutting and it did not do any processing of food in its mouth. Much like later sauropods, it would have bitten off vegetation and swallowed it whole, letting it ferment in its gut and be broken down that way.
I really want to see one on Dimetrodon (ducks to avoid retribution). Seriously though, would like to see it, bit of a Permian fan : )
A bit outside of my field I’m afraid. You can watch my Coelophysis video to see some of the weird creatures of the Triassic.
@palaeo_channel np, I will eagerly await whatever dinosaur you do next, keep up the great work!
Ceratosaurus please
How fast could it run?
Also i think u meant *most* dinosaurs couldn't chew. As I'm pretty sure hadrosaurs and ornthopods could chew pretty well.
It is possible that some ankylosaurus had loose enough jaws to chew, but hadrosaurs had a teeth grinding system that mimicked chewing.
Very nice!
Excellent content. Thank you!
Great presentation, thanks a lot!
Plateosaurus could have been a part time knuckle walker particularly when they had to bend down and slurp water.
Maybe when bending down, but the knuckles were not built for supporting weight. If you find this interesting and want to look into it, the paper can be found at: www.app.pan.pl/archive/published/app55/app20090075.pdf
When exactly did dinosaurs start growing feathers? That notion was always foreign to me...
Turning scales into filaments probably began around 250 million years ago in the Lower Triassic before dinosaurs split from pterosaurs. Both groups have members showing these kind of hair-like 'feathers'. You would probably have what we would recognise as feathers showing up in some dinosaurs around 165 million years ago.
There is no evidence that some dinosaurs like sauropods ever had feathers, and most were probably still scaly.
I actually have a feathers video that I am doing some work on.
@@palaeo_channel Hmm...
were hadrosaurs not able to chew? Granted they came much much later, but I was just wondering about the statement "Like all dinosaurs plateosaurus could not chew"
Hadrosaurs could not chew either. Their jaws had a system that allowed the teeth to grind together and mimic chewing.
@@palaeo_channel isn’t that chewing though? Pardon my ignorance but what would be the difference in the way/intent of the way hadrosaurs did it compared to mammals? Grinding surfaces that worked the food?
@@stalker1983 Chewing is grinding food by the lower jaw moving side to side and back and forward, which archosaurs cannot typically do. Ornithopods had a work around by moving their jaws up and down in a specialised way. I do have an Ornithopod in my schedule that should clear thing up.
@@palaeo_channel Oki cheers :)
@@palaeo_channel ¿ plateosaurus from greman ?🇩🇪
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thumbs up from me
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