When the Synapsids Struck Back

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.

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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[Defenestrationflight]

Having a degree in archaeology... Burrowing is definitely among the hobbies.

[adnannaemaz]

Interviewer: What are your hobbies

Me: Burrowing and can chew/breath at the same time

[chillyman]

Bulbasaurus... they did it. They really did it 👏👏

[arararafi]

06:25
Me: * eating *
Also me: *starts chewing and breathing vigorously*

[friedchickenUSA]

hobbies include: breathing while chewing at the same time

[rogeriopenna]

*travels back in time
"Behold, Synapsid! I am your intelligent descendant from the far future"

*Synapsid chews human while breathing

[WannonCreekWildlife]

Could you do a video on when the three different types of mammals (marsupials, monotremes and placental mammals) diverged from one another?

[guerrerohr]

I simply can’t believe how odd looking were the synapsids, wait a minute

[FaffyWaffles]

According to Wikipedia,

Bulbasaurus was not directly named after the Pokémon Bulbasaur, but rather after its nasal bosses, which are unusually bulbous among geikiids; however, the describers noted that the similarity in name "may not be entirely coincidental." Additionally, the specific name of the type species means "leaf razor" (similar to the Pokémon move "Razor Leaf"), which is most directly a reference to its keratin-covered jaws. Other distinguishing characteristics of Bulbasaurus among the geikiids include the hook-like beak, very large tusks, and absence of bossing on the prefrontal bone.

[spiderdog]

Synapsid: Mouse, I am your father!
Mouse: That's not true that's impossible!!!
Synapsid: Search your fossil record, you know it to be true.

[AdventuresinCaleia]

Kind of disappointed that bulbasaurus doesn’t have a cabbage on its back.

[robertkirby]

First Age of Synapsids (Stem-Mammals): 300-252 MYA


Age of Archosaurs: 252-200 MYA


Age of Dinosaurs: 200-66 MYA


Second Age of Synapsids (Crown-Mammals): 66 MYA-Present


We've have indeed come full circle.

[andyjay]

That title...


Darth Metrodon: Birdy Wan never told you what happened to your ancestors.
Human Savannawalker: He told me enough! He told me you killed them!
Darth Metrodon: No, *I* am your ancestor.
Human Savannawalker: No. That's not true! That's impossible!
Darth Metrodon: Search your DNA; you know it to be true.

[animaticvee]

Synapsids are one of my favorite groups of animals. It always fascinated me seeing them and knowing that they are the connection between me and my dog and my cat and a giraffe. It's wild.

[bigpapao]

Hey mom can we have mammals?
"We have mammals at home"
Mammals at home:

[nabusvco]

I knew pokemon were real


Bulbasaurus proves it.

[carli-wandafivaz]

Absolutely love this time period in fact anything from the Permian and before I enjoy the most. There is not enough informative videos regarding all the wonderful things from the beginning of life to the Permian.
Thank you for all your fantastic videos

[vancel]

Re: The questionnaire you sent out... You asked what my favorite content is, but I like all of it, so it was hard to pick just one.

[wildnye]

I'm really looking forward to sharing these with my kids later on.

[Deinerian]

Finally. The synapsids! I’d love to see more coverage on these guys. Especially Anteosaurus.