Dromaeosaurs: The Strange Carnivores of The Mesozoic Era | Dinosaur Documentary
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- Опубликовано: 28 май 2024
- Dromaeosaurs represent one of the largest learning curves in all dinosaur groups. These maniraptoran theropod dinosaurs, members of the family Dromaeosauridae, are among the most famous and commonly depicted of all dinosaurs, and were one of the most widespread and successful theropod clades. The family was officially described and established by William D. Matthew and Barnum Brown in 1922, but at this point, many dromaeosaur genera were poorly understood. Dromaeosaurs at this time were portrayed as unobtrusive, generic predators, essentially like small versions of large theropods such as Tyrannosaurus. One man would swiftly change everything, however - American paleontologist John Ostrom. Ostrom was responsible for revolutionising humanity's understsanding of dinosaur posture and appearance, and it was his work on the famous dromaeosaur Deinonychus that sparked it all.
0:00 Introduction
6:53 North America
16:29 Europe
20:30 Africa
24:00 South America
30:44 Asia
38:51 Outro
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Very therapeutic to slow down the mad pace we exist in, and your studies are wonderfully soothing and informative. Thanks for that.
Yes i agree 👍🏻
@@jaywolfdesigns+.
Very informative. Why does this channel have so few members?
For the majority of their videos, at least, a good 50% of the material presented is completely wrong. I haven't seen this one yet so I can't comment on it directly.
With all the respect, this is a great video to fall asleep to ❤️ As someone with issues getting and staying asleep, these are wonderful
I totally agree. Hard to stay awake during this video.
*Great video, Great illustrations, Great information! Dinos are well and ALIVE*
First
Pdta: I haven't seen the video yet but I'm pretty sure it's going to be a delight.
Ok, this needs to be corrected. Utahrapor lived in the Barremian age of the Cretaceous, which means over 125 million years ago. That is not in any way "the late Cretaceous", it's actually the early Cretaceous.
It’s almost hilarious these mysterious made up ages 120 5 million years 500 million years my ass not when they’re pulling out red blood cells out of dinosaur bones that have not been fossilized. What a bunch of horseshit they’re trying to tell us. Believe what you want. Good luck with your choice.
Perhaps they were talking about Dakotaraptor?
My favorite dinosaur group! Thank you.
Cool vidoe, I had no idea that Dromaeosaur family of dinosaurs was so large.
Nice. Ill return to watch da rest.
Could you please make documentary about the sea creatures of the permian and other clades?
Very informative and engaging. Thank you!
Informative and well made. But i did have to watch it at x1.25 speed 😅
Thank you, your content is the best dinosaur content I have ever seen. I can't get enough of your channel. I repeatedly watch your videos over and over. I appreciate your hard work and I hope for much more!
Your voice makes me fall asleep lol! Keep up the good work💜
Very good documentary
Thank you! Very nice
Excellent video.
They look more like birds than reptiles.
Thanks for the information.
9:40 That's my artwork from Deviantart.
9:10 & 10:41 *Picture depicts what was discussed and agreed upon by Paleontologists & Biologist a couple years ago, about that Sickle Claw. It was more likely to be used for the Raptor to pierce and hold onto its prey, and less likely used as a slashing weapon. Outstanding documentary, and may thanks for sharing with us all* 5⭐ 2👍 10🏆
I think the background music cut out in the N. America section, but other than that a great video!
I just want to say that my son has the Deinonychus in a special place in his heart! 🥰
I've never heard about those dinosaurs.
They look more like birds than reptiles
"They look more like birds than reptiles"
- guess what birds are?!
Birds are dinosaurs so you're perfectly correct
It should be noted that Tenontosaurus was actually significantly smaller than often assumed, so it’s not out of the realms of possibility that even a single Deinonychus would have been able to prey on it on occasion (albeit at VERY heavy risk to itself).
When were feathers found
How is it that the synapsids led to two physiological systems totally different from each other and just as successful? Mammal versus bird physiology is a fascinating subject.
Awesome.
Great work but I think Utahraptor is actually early Cretaceous not late
To be fair, we have no way to actually know if that protoceratops and raptor were actually locked in combat, or ended up that way after death, as in a typical desert flash flood.
I like this video
Hi, could you make playlists for us to binge through later? I would be so grateful. 🦖
What evidence do we have to show what the color of some dinosaurs feathers were?
Consider that darker coloured surfaces attract and hold heat while lighter coloured surfaces reflect light and remain cooler. If a dinosaur were to inhabit a desert environment such as Velociraptor it would likely have lighter sable-coloured plumage to help keep it cool in the heat of the desert and the colouration would help it to blend into its desert environment. Now an animal in a more northern latitude environment such as Troodon, albeit not a raptor but a Dinosaur that would have been found more north of an animal like Deinonychus or Utahraptor would have lived in cooler forested latitudes and would have likely had darker plumage to help it not only to camouflage in its environment but also attract the Sun's rays and heat the animal. It would make the most sense to infer that colour has a lot to do with thermo-regulation.
The only thing slower than this video is my internet speed.
I feel like this video, so far anyway, does not sufficiently emphasize that the best metric for dromaeosauridae success is that ALL BIRDS evolved from them, and could be argued to still be dromaeosaurs.
This should change the tenor of some of the video from "Strangely, those dromaeosaurs resembled herons and ducks" to "herons and ducks evolved from dromaeosaurs, perhaps ones like these". At worst, it's parallel evolution, not convergent.
hey ive just come up with a new theory about how Ankylosaurs got its tail club. I just noticed my dad's dog also has a lump on the end of his tail. He wags his tail so hard hes constantly whipping his tail into things. So my theory is, its not for defence or offense, its purely because they were so happy and they were wagging their tails a lot & just so happened to keep hitting things.
funny how none of these are compared to the flightless birds of today like the Kiwi, Dodo, Emus, Cormorant, Penguins, kakapo, and Ostrich. There many more that exist in New Zealand to this day.
Cormorants DO fly, and none of these birds are carnivorous except the Penguin, piscivorous. Also "feathered dinosaur" doesn't mean "bird ancestor", despite Microraptor being apparently able to fly, he would be the only dromaesaur (for now ?) who could be clearly compared to birds.
@@stoneworld5962
- Factually; there _are_ flightless cormorants
- Charitably; Kevin is referring to _these_
@@Dr.IanPlect Ok, still a bad example of flightless birds since some of them DO fly. And those birds are still far from the topic. We CAN compare a chicken and a T-rex if we want, but what's the point ?
@@stoneworld5962 yep
The shape of their skeletons are not as bird like as the illustrations depict. They're tails are much longer, and the arms are completely different. Jurassic Park is more accurate from an anatomical standpoint. Whilst they may have had feathers, they wouldn't have looked anything like the pigeons on this video lol
Cute. I want to pet them.
3:47 who created this art?
It's Lulworth Cove formation mate, not Cave. The actual cove could be seen in background 👍
I doubt he could read a n y s l o w e r. . .
Leave your playback at 1.5
@Robin Kelly - No thank you. That would be almost as your f¥¢kin response to a Two Week Old comment! Mr.Flippin' Slow Mo...
When commenting on animal intelligence, script writer forgot that human beings are part of the animal kingdom. Humans are not rocks (minerals) or plants. Basic science.
So is dinosaur reptile or bird?
Birds are dinosaurs
Birds are dinosaurs, dinosaurs are reptiles.
Yes
Neither…. There are no transition species. There is no macro evolution not one shred of fucking proof.
Correction: Utahraptor lived in the Early Cretaceous.
The droning soporific voice is slightly less painful if played at .25 x speed.
I like the calming voice, i suspect parents put this on for kids right before nappy time😊
Voice is too slow. Better at 1.25
Kinda weird to call this a documentary, then drop a bunch of "facts" not backed by research. Even using character models from the Jurassic Park franchise without explaining... Atrociraptor from Jurassic World is nothing like it's real life counterpart.
He debunked at least 3 JP dinosaurs in this episode, ain't it enough ? Velociraptor and Pyroraptor at least. I'm no specialist but this guy seems to respect the doubts we still have about those dinos, which is cool. But yeah, after a while, we need to be affirmative about some stuf ! 50 min doc always saying "maybe he was like that, if he could do it then he might have been able to, perhaps, if the conditions are united"... uuugh... boring
You forgot mico raptor dinosaur 🦖 he is a USA 🇺🇸 dinosaur 🦖 7:00
Where Deinonychus?
There are entirely too.msny interruptions. Lose the sds if you want viewers.
อะไรกันนี่........
play it at 1.25x speed
They may be doing us a favour ; without Knowing .
If this is another example of AI and Lots More to Come;
Then it will Be Easy to Simply Turn It Off !
The wing pictures look way off imo. The claws on the skeleton clearly show arms and hands, not wings lol.
Both, actually. The arms and hands had holes in them on which to anchor wing feathers (and these wing feathers are in better quality specimens actually preserved)-- the hands and claws would have been partially concealed by these feathers, like a cat's claws. These weren't real wings obviously-- they were not for flying and would have been instead been used to give them stability when running and allowed for more maneuverability.
Mesochickens
More like hawks
@@Nomad-sw4uy
Chickens are omnivores - you should see what they do to a rat.
Sleep typa videos
I hate AI
It's obvious they were birds, not dinossaurs.
Birds ARE dinosaurs.
Too bad there’s not one shred of macro evolution….
If only you had a case.
Ehh....I give the JP franchise a pass on accuracy. Two reasons. 1: Every "dinosaur" they depict is explicitly a mix'n'match creature where their DNA is concerned, which means behavior and coloration is inherently gonna be inaccurate (and in the novels, they were also explicitly made more dangerous and ferocious in order to thrill the potential park visitors through even further DNA alterations--and that's setting aside what socialization might do to affect, mitigate, or even pass on behaviors in the smarter and more social dinosaurs) and 2: What we "know" about dinos changes almost year to year. Any accuracy a movie gets is inherently subject to change as we learn more, as the movie is more or less set.Not like the knowledge amassed through continuous study at all...they're just standing on the shoulders of giants, and before they even know what they really have, they've patented it, and marketed it, and slapped it on the side of a lunchbox and they're selling it.
I don’t think you’re giving them their due credit. Those scientists did things that no one has ever done before…
I hate the fact that almost all dinos now are shown with feathers w/o any real evidence that they had them when alive.
This group has fossils found with actual feathers preserved.
There's evidence in many fossils.
There have been a large number of fossils with feathers starting with Archaeopteryx, through the vast number of Chinese fossils; who have just been busy little bees the last twenty years or so digging up new fossils all the time!!!
You are correct but in the case of this specific group feathers are ancestral. As such, a featherless dromaeosaur would be like a hairless mammal-- that is, not impossible, but not the "default" state and not as common as the ancestral condition.
Yes. Archaeopteryx clearly had feathers. Years ago, the it was found out that the Chinese had passed off a fraudulent fossil having feathers. Therefore, I don't trust all these fossils coming out of China with feathers when none or few are found elsewhere in the World.
Why talk in slow motion.
No wings
I wish you all would stop using metric system