The Raptor That Made Us Rethink Dinosaurs

  • Published: 29 August 2019
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    In 1964, a paleontologist named John Ostrom unearthed some fascinating fossils from the mudstone of Montana. Its discovery set the stage for what’s known today as the Dinosaur Renaissance, a total re-thinking of what we thought we knew about dinosaurs. 

    Thanks as always to Studio 252mya for their wonderful paleoart. You can check out more of their work at

    Produced in collaboration with PBS Digital Studios:

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Comments • 754

  • Morrigan Arianrhod
    Morrigan Arianrhod  3 hours back

    Watching this after watching "the missing link that wasn't" and thinking "oh wow it's the missing link between birds and dinosaurs, wait there is no such thing as missing links"

    • Brian D
      Brian D  1 days back

      Yeah... um... I'm going to have to watch this SEVERAL times!

      • Tim Outman
        Tim Outman  1 days back

        How did the avian dinosaurs survive the asteroid that killed off the non-avian dinosaurs? Please provide details of their habitat since forests were probably destroyed by the asteroid, too.

        • Lumberjack king the great

          I haven't watched this channel in a while

          • bungalo50
            bungalo50  6 days back

            What a coincidence I just had a Dinosaur and Noodle soup

            • Leo Francis
              Leo Francis  6 days back

              This is my fav vid thus far ! More please

              • Nikolas Garland
                Nikolas Garland  1 weeks back

                Jurassic world velociraptor - no,actually is deinonychus velociraptor - feathers deinonychus no feather. (Blue is deinonychus).

                • Nikolas Garland
                  Nikolas Garland  2 weeks back

                  Please do an episode on Carnotaurus!

                  • Denise Glines
                    Denise Glines  2 weeks back

                    when you are old enough to remember the Dinosaur Renaissance... it's still great fun to study the developments! Thanks EONS.

                    • Fall-From-Grace
                      Fall-From-Grace  3 weeks back

                      when you mentioned respiration i started breathing manually, thank you

                      • Joel Masanza
                        Joel Masanza  1 months back

                        Are you warm or cold blooded?

                        Dinosaurs: *Yes, but no, and also yes, maybe both and neither and yes!*

                        • David Schaftenaar
                          David Schaftenaar  1 months back

                          Hey! You guys just answered a question I've had for a few months now: Why did _zero_ non-avian dinosaur species survive? How come even the smallest died out, rather than survive as remnant populations? Just a hunch... Are all the surviving mesotherms aquatic by any chance?

                          • Arte de Cuauhtemoc Maldonado

                            Muy interesante

                            • Pete Franklin
                              Pete Franklin  1 months back

                              You wean all that acid rain didn't singe their feathers?

                              • Emmett Battle
                                Emmett Battle  2 months back

                                i have a question for anyone who might know why:
                                why havent museums and stuff added feathers to their dinosaur exhibits where we know there are feathers? since i was a kid ive always loved day trips to natural science museums and stuff like that and havent gone for a really long time. i went to a museum a few weeks ago and in the dinosaur exhibits there were no mentions of feathers or even feathers being up for debate on some kinds. do you think its a money thing (as in itd cost too much money to make new models, signs, etc) or do you think it might just be an "everyone likes these ones so lets not change it" thing?

                                • VeggiePun
                                  VeggiePun  2 months back

                                  Science, "are dinosaur cooled or hot blooded!?"

                                  Also scientist, "Yes"

                                  • AyZeD
                                    AyZeD  2 months back

                                    Whenever I watch videos like this I think it sucks that we'll never see one of these animals in the flesh and all we have is fossils and guesses.

                                    Even if they manage to clone one they can only use animals we have today so it will never be an exact replica

                                    • crazycatlady39
                                      crazycatlady39  2 months back

                                      Basically, somebody says "What if?" and the world goes mad.

                                      • Dandy
                                        Dandy  2 months back

                                        those baby birds were buggin

                                        • Kaldwin Poison
                                          Kaldwin Poison  2 months back

                                          Evolution of spiders or tarantulas would be cool

                                          • Matthias Kiefer
                                            Matthias Kiefer  2 months back

                                            Dinosaurs breathed steam because all oceans were still under the plate

                                            • flamencoprof
                                              flamencoprof  2 months back

                                              Thanks for not having a title ending in a question mark.
                                              Just because we create boxes doesn't mean things have to fit in them.

                                              • FocusFanatic
                                                FocusFanatic  2 months back

                                                Wait, if dinosaurs were birdike than lizards and prerosaurs were flying reptiles, why aren't birds evolved from pterosaurs instead.

                                                • Dana Chapin
                                                  Dana Chapin  2 months back

                                                  FocusFanatic - The pterosaurs all went down with the asteroid strike about 66 mya. Nothing survived larger than about 50 pounds was one estimate. So only small, ground dwelling, perhaps burrowing avian type dinosaurs survived the extinction event. The pterosaur group may have overlapped in time with and competed with early avian dinosaurs but they came from different lineages, with different physical traits and pterosaurs were wiped out.

                                              • Rowan Hill
                                                Rowan Hill  2 months back

                                                lol cheats

                                                • simon g
                                                  simon g  2 months back

                                                  Another great video guys. Any chance you could do something about the ancient oceans like Iapetus? Or something about the british isles (particularly Ireland ) and the caledonian orogeny thanks

                                                  • Hello_China
                                                    Hello_China  2 months back

                                                    Please do a video on elephant evolution!

                                                    • LaZer Troll
                                                      LaZer Troll  2 months back

                                                      I would like to know about any correlations or any direct relations between polar reversals to species in fossil record (up to current), and the potential implications ... ?

                                                      • LaZer Troll
                                                        LaZer Troll  2 months back

                                                        .. or even relations to ME events?

                                                    • b h
                                                      b h  2 months back

                                                      would be cool to see an episode about the giant beavers that roamed north america long time ago

                                                      • Samuel Rice
                                                        Samuel Rice  2 months back

                                                        Is there such thing as a reconverging branch genus like if a genus splits into two different genus’s but reconvenes due to circumstances?

                                                        • TJ OConnell
                                                          TJ OConnell  2 months back

                                                          Could there be a video on prehistoric crocodiles? All of them are really cool.

                                                          • Rodney Graves
                                                            Rodney Graves  2 months back

                                                            This is gonna sound like a weird request. But my two year old loves watching these videos with me. He loves the dinosaur and cat episodes. But he also loves cows. We just watched the horse one and he loved it! So is there any interesting history of cows that I can show or read to him?

                                                            • Aberrant Artist
                                                              Aberrant Artist  2 months back

                                                              Here is an idea for a video. A longer video explaining how most dinosaurs had feathers, from theropods to raptors and mist likely T. rex. You can present the evidence supporting this and clear up some misconsceptions

                                                              • Kama Kamelean
                                                                Kama Kamelean  2 months back

                                                                Can you do a video on what megalodon really looked like

                                                                • Joseph Willis
                                                                  Joseph Willis  2 months back

                                                                  7:41 Why is it "66 million years" now? Has it really been a million years since my childhood? ;)

                                                                  • Matheus Rigobelo
                                                                    Matheus Rigobelo  2 months back

                                                                    please, guys.. i know it's usually boring but can u make a reminder, even writen to like the video at the begining of it? I watch all of your videos and love em' all but i keep forgetting to do, so. I believe it's not just me, so... Danke!

                                                                    • Kilgore Trout
                                                                      Kilgore Trout  2 months back

                                                                      Many of the large one were probably gigantotherms.
                                                                      You don't need specific metabolic adaptations to generate internal heat when it's so hard to lose it in the first place.

                                                                      • Kim Jong Squarepants
                                                                        Kim Jong Squarepants  2 months back

                                                                        Do a video on cryptids such as bigfoot and whether there is even a justification for their existence. I know I'm asking for something much different from the main course on the channel.

                                                                        • Pepsican
                                                                          Pepsican  2 months back

                                                                          Ark ?????

                                                                          • Sergey Yaklich
                                                                            Sergey Yaklich  2 months back

                                                                            Pterosaurs have been warm blooded and varied in forms and sizes. They got extinct 66 millions ago as well.

                                                                            • Bhaskar Yadav
                                                                              Bhaskar Yadav  2 months back

                                                                              That dinoneychus image is so beautiful and look so much like a toothy bird as it should be

                                                                              • Dean Kittelson
                                                                                Dean Kittelson  2 months back

                                                                                I love how the ad is longer than the actual video. A 10 minute ad? come on man...

                                                                                • Guillermo
                                                                                  Guillermo  2 months back

                                                                                  Oh my god, Blake's shirt. <3

                                                                                  • James Beech
                                                                                    James Beech  2 months back

                                                                                    What about gigantothermy?

                                                                                    • gwynplane723
                                                                                      gwynplane723  2 months back

                                                                                      Could you do a segment on the carnivoran families Nimravidae and Barbourofelidae. Particularly when they first evolved and when they died out. I'm getting too many conflicting dates and would like to have a definitive answer. I'd also like to know if the rise of sabre-toothed felids played a role in their extinction.

                                                                                      • Sieb Kelder Art
                                                                                        Sieb Kelder Art  2 months back

                                                                                        Can you guys do one on the possible 6th massa extinction that was discovered recently?

                                                                                        • Sonja Johnson
                                                                                          Sonja Johnson  2 months back

                                                                                          Fascinating! You handle all these complicated questions SO very well, it's never ever boring!

                                                                                          I'm wondering - I believe you already covered the evolution of horses, yes? But can we take a look at the evolution of the "other" hooved critters of the world - goats, deer, and so forth?

                                                                                          • DanBrohare
                                                                                            DanBrohare  2 months back

                                                                                            Holy crap is this video a tongue twister. The host nails it though, great job!

                                                                                            • Trashlord Supreme
                                                                                              Trashlord Supreme  2 months back

                                                                                              This reminds me of when I was in high school, and I asked my Biology teacher how birds are warm-blooded if dinosaurs were cold-blooded. He told me that they developed warm-blood, and needed to in order to have enough energy for flight. I asked if dragons would need to be warm-blooded to fly. He told me they probably would. I asked him if they would resemble birds more than lizards or snakes, and he said he thinks that would make more sense, too. So, my fellow nerds, may I propose the idea of dRaGoNs WiTh FeAtHeRs?