When the Synapsids Struck Back

  • Published: 20 June 2019
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    Synapsids were the world’s first-ever terrestrial megafauna but the vast majority of these giants were doomed to extinction. However some lived on, keeping a low profile among the dinosaurs. And now our world is the way it is because of the time when the synapsids struck back.

    Thanks to Ceri Thomas for the excellent Synapsid illustration (including Bulbasaurus!)! Check out more of Ceri's paleoart at alphynix.tumblr.com and nixillustration.com

    And thanks as always to Studio 252mya for their wonderful illustrations. You can find more of their work here: 252mya.com/

    Produced in collaboration with PBS Digital Studios: cepnet.mobi/user/pbsdigitalstudios

    Super special thanks to the following Patreon patrons for helping make Eons possible:

    Katie Fichtner, Anthony Callaghan, Zachary Spencer, Stefan Weber, Ilya Murashov, Charles Kahle, Robert Amling, Po Foon Kwong, Larry Wilson, Merri Snaidman, Renzo Caimi Ordenes, John Vanek, Neil H. Gray, Esmeralda Rupp-Spangle, Gregory Donovan, الخليفي سلطان, Gabriel Cortez, Marcus Lejon, Robert Arévalo, Robert Hill, Todd Dittman, Betsy Radley, PS, Philip Slingerland, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Daisuke Goto, Hubert Rady, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Alex Yan

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    References: docs.google.com/document/d/1YbTns-AcONtRWN9pdOZMfiqYDP5-3Hb-zt1gtDMV1Fw/edit?usp=sharing
  • Science and Technology Science and Technology

Comments • 1 220

  • josh peck
    josh peck  3 hours back

    Impressive presentation.

    • Craig Wall
      Craig Wall  3 days back

      My name is Craig...dweller of the crag. I definitely have burrowing tendencies.

      • Kankarii
        Kankarii  4 days back

        2:06 what song is that? Where can I find it?

        • S.N. Lee
          S.N. Lee  7 days back

          I'm sorry calling them " ancestors" seems strange the origins of at least humans are not certain by science or anyone else , is mysterious. it seems strange that earth seems to be a planet where animals flourish but if we are a product of this same system why are we so young in fossil records but so advanced and why aren't there any species of creature besides homo sapien around that can reason or that look remotely like us I know neanderthal and others but why did they die off did we kill them all?

          • Kyle Russo
            Kyle Russo  7 days back

            Would have they tasted more mammalian or reptilian is my question?

            • SnowmansApartment
              SnowmansApartment  1 weeks back

              what a perfect pet for a time traveler =)

              • Aaron J
                Aaron J  2 weeks back

                if my great great great x100 rat-granny could live in the ground, then i know this is my true calling. . .

                • Aaron J
                  Aaron J  2 weeks back

                  Me: *casually minding my own business, currently making a new burrow for myself, as most reptile-rats do*
                  Eagle: *scoops me up and carries me away*

                  • VonnPlays - Ognimdo2002

                    Birds are dinosaurs
                    Reptiles are itself
                    Amphibians are fish
                    Humans and mammals are synapsids
                    Me: all races are synapsids
                    Ah damn, here go again

                    • Faisal Abdullah
                      Faisal Abdullah  2 weeks back

                      Where is Venasurus? By the way I am descendent from the Charizardarus branch.

                      • Lor Bmoreflow
                        Lor Bmoreflow  2 weeks back

                        So platypus is one of these synapsids? Lay eggs have fur and a beak?

                        • generic username 420
                          generic username 420  2 weeks back

                          No, platypus is part of a group called monotremes. Their beak isn't made of keratin like an actual beak, they are modern mammals

                      • Jalisa Kowalski
                        Jalisa Kowalski  4 weeks back

                        Please dont ever stop this channel. Continue discovering. This series is like an addiction.

                        • Devix
                          Devix  4 weeks back

                          Looking at our trenches during WW1, we still do some burrowing actually.

                          • Lewis Goldsberry
                            Lewis Goldsberry  4 weeks back

                            It comparable of large dinosaurs

                            • Horizonte de Sucesos
                              Horizonte de Sucesos  4 weeks back

                              Thank you PBS Eons for this!! love your channel

                              • ivan abrosimov
                                ivan abrosimov  1 months back

                                wait,wait, how about the lystrosaurs? they survived the extinction too, didnt they?

                                • Hentai God
                                  Hentai God  1 months back

                                  Borat voice ,what type of dog is this? 😂

                                  • Dani Play's
                                    Dani Play's  1 months back

                                    Poor dogo

                                    • Leonard Bright
                                      Leonard Bright  1 months back

                                      I have a theory that monotremes arent mammals but the last branch of synapsids;

                                      • Jammie!
                                        Jammie!  2 weeks back

                                        hypothesis at best*

                                    • Kal
                                      Kal  1 months back

                                      Did these animals lay eggs or give live birth?

                                      • AliasUndercover
                                        AliasUndercover  1 months back

                                        Eh, I've been known to burrow on occasion.

                                        • Mr Monstah
                                          Mr Monstah  1 months back

                                          5:47 *Bulbasaurus* I KNEW IT, POKEMON ARE REAL!

                                          • Elenna Pointer
                                            Elenna Pointer  1 months back

                                            Just think - the rats we see around us may be the ancestors of the next intelligent species on Earth.

                                            • Vincent Cournoyer
                                              Vincent Cournoyer  1 months back

                                              Maybe our need to have a roof over our heads is connected to the habit of burrowing? Very interesting episode thank you Eons!

                                              • João Gabriel
                                                João Gabriel  1 months back

                                                Well, is it burrowing under blankets still considered burrowing?

                                                • PixelDrake
                                                  PixelDrake  1 months back

                                                  What's the name of the piece playing in the background during the opening? I like it

                                                  • Carolina Coreas
                                                    Carolina Coreas  1 months back

                                                    I wish I watched this video the day before my bio quiz , it would have helped me a lot.

                                                    • Thomas Tuthill
                                                      Thomas Tuthill  1 months back

                                                      Synapsids are 65% demon orbs, 30% water, 5% mammal.

                                                      • Jackie Santos
                                                        Jackie Santos  1 months back

                                                        Well yeah probably we have a little reptile inside of Us Wellston mammal or shirt

                                                        • Ayla Williamson
                                                          Ayla Williamson  2 months back

                                                          Can you imagine being a small lizzard chilling and this hyperactive black-eyed toothy monster comes after you like a ghost girl crawing on a ceiling?

                                                          • Acedia Nihil
                                                            Acedia Nihil  2 months back

                                                            Minecrafts popularity makes so much sense now.

                                                            • thefran901
                                                              thefran901  2 months back

                                                              Mammals to avian dinosaurs (birds): "The synapsids send their regards."

                                                              • RayMondoART
                                                                RayMondoART  2 months back

                                                                One of my fav episodes as I get to see many many weird "freaks" XD cotylorhynchus is weird enough but moschops? Omg

                                                                • Undercover Hat
                                                                  Undercover Hat  2 months back

                                                                  Thanks so much for your work and your enthusiasm, Kallie!! Your awesomeness is immeasurable. :)

                                                                  • Michael Crockis
                                                                    Michael Crockis  2 months back

                                                                    I'm burrowing in the blanket right now while watching it. Can't lose your instincts just like that.

                                                                    • Arceus Lord of Creation
                                                                      Arceus Lord of Creation  2 months back

                                                                      “Hobbies include borrowing”
                                                                      Adding that to my Tinder profile😉

                                                                      • Octavio Nieto
                                                                        Octavio Nieto  2 months back

                                                                        5:17 When you accidentaly open the front camera

                                                                        • Random Guy In The Comments

                                                                          3:48 ...ok lady, you're trying to tell me that's not a lizard with a tiny shark head, and a frog with a tail?

                                                                          • Richard Horsfall
                                                                            Richard Horsfall  2 months back

                                                                            ..."on the cusp of the worst disaster it would ever experience"...So far.

                                                                            • Carlos Monroy
                                                                              Carlos Monroy  2 months back

                                                                              looks like an ancient dog.

                                                                              • roop298
                                                                                roop298  2 months back

                                                                                Flush. I like a girl passionate about her topic.

                                                                                • EloquentTroll
                                                                                  EloquentTroll  2 months back

                                                                                  Bulbasaurus, I choose you!

                                                                                  • sluggo3slug
                                                                                    sluggo3slug  2 months back

                                                                                    Please sit down

                                                                                    • ChaireFace
                                                                                      ChaireFace  2 months back

                                                                                      I want to pet the evolutionary ancestors

                                                                                      • Daniel May
                                                                                        Daniel May  2 months back

                                                                                        Far out

                                                                                        • Bacalhau da Noruega
                                                                                          Bacalhau da Noruega  2 months back

                                                                                          It surprises me that the other order of reptiles (squamata) have evolved mammalian traits and wonder if a new branch of pseudo mammals could appear from them. Some of these synapsids certainly look a lot like our modern day lizards already so I think it would be possible.

                                                                                          • Doraemon Universe
                                                                                            Doraemon Universe  2 months back

                                                                                            1:00 size of bear
                                                                                            that thing is huge as a SUV