Dimetrodon: Our Most Unlikely Ancestor

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With its lizard-like appearance and that distinctive sail on it back, Dimetrodon is practically the mascot of the Palaeozoic Era, a time before flowers, birds, mammals, and even crocodiles. But if you take a close look at this sail-backed animal, you might see a little bit of yourself.
Thanks to Franz Anthony and Studio 252mya for the Dimetrodon illustration. You can find more of Franz's work here: 252mya.com/gallery/franz-anthony
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References:
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[@TROKAPA]

Grandpa is that you

[@maryqueen2545]

Damn 😂😂😂😂

[@andrefabri6191]

No, because it's not our ancestor, it's a relative of our ancestors but not exactly our ancestors.

[@evantanuwidjaja8017]

your pfp scares me

[@Jay-fk9gs]

Looks like mine. Scaly bastard, he was. Hands like a lizard.

[@ford7372]

Oh God i-🤣😭💀💀

[@shoulders-of-giants]

Awwwwwwwwwww, it's our great great great²⁰·⁰⁰⁰·⁰⁰⁰ *grandma* !

[@jobowisheshewasnomo4171]

your granma²⁰·⁰⁰⁰·⁰⁰⁰'s ugly bro.

[@robinchesterfield42]

Great-Aunt Dimetrodon! (according to Minute Earth) :)

[@Alex-kp5pq]

20 million generations, I think.

[@campkira]

looking at my dry skin. I can see why we are related. wish we have more ability like them.

[@annemaria5126]

When dry, our skin really looks a very reptilien.

[@calsheridan8961]

"... you might see a little bit of yourself." *smiles as a sail raises from inside my shirt*

[@Hellsaint92]

Lmao

[@tombrown3355]

Is that your sail or are you just happy to see me

[@tylerjones7592]

are you a Spinosaurus

[@hazzr2121]

@@tylerjones7592 watch the video

[@neildegrassetysonwithaknif7124]

@@tylerjones7592 did you watch the video

[@100chocobo]

Someone told me I was stupid because I said dimetrodon wasn't a dinosaur.

[@scaper8]

100chocobo You were most certainly right! Show 'em this. ;-)

[@vigilantsycamore8750]

I've met people who thought that the big bang, the meteorite impact that wiped out the dinosaurs, and the separation of the continents that made up pangea were all the same event, so...

[@jacklonghearse9821]

Vigilant Sycamore ..And it all happened no more than 5,000 years ago.

[@SaurophaganaxSRG]

100chocobo let them be stupid, you know the truth by yourself

[@justine7126]

OR why not educate people like this video does ?

[@manospondylus4896]

If non-mammalian synapsids can be called stem-mammals, can dinosaurs be called stem-birds?

[@Juneerah]

Yes, as can pterosaurs.

[@manospondylus4896]

JuneeThylacine That's weird (btw, nice name)

[@soylentgreenb]

Pterosaurs are absolutely not related to birds.

[@thecoffeeisblack]

Yes, but it's also clear that modern birds and dinosaurs are more closely related to each other than Dimetrodon is to modern day mammals, so much so that modern day birds are currently classified as dinosaurs, just as a lower classification of the overall group. This is especially clear when you see that prehistoric birds already existed at the time when other classifications of dinosaurs were still running around, and I'm not just talking about animals had dinosaurian teeth but also had feathers, by as early as the Jurassic you had bird species capable of flight and that showed distinctive features like beaks. You also had birds evolving to fit specific niches that made them more distinct than just arboreal feathered dinosaurs that learned how to glide or had the ability of powered flight. You had birds that lived in the forests, the coasts, and even sea birds that could not fly but swam through the water like horrifying monster penguins (hesperornis if you are wondering, a 6 foot tall sea bird with teeth that swam in the cretaceous oceans).

[@martinkois7126]

soylentgreenb Clade ornithodira/avemetatarsalia begs to differ. That said, as a highly derived branch, saying that pterosaurs are "stem birds" is fairly inaccurate. So, a little right, a little wrong.

[@dndboy13]

Stem-mammal strut sounds like a gimmicky dance from the 90s

[@phrenetic6254]

It sounds 90s AND naughty.

[@davidozab2753]

"You and me baby ain't nothin' but stem mammals ..."

[@christinepickering9896]

Stray cats lesser known hit.

[@greenninjaihyt5461]

This comment brought to you by r/rareinsults

[@flap.d.jack247]

@@greenninjaihyt5461 how is that an insult?

[@FastCarsNoRules220]

"These kids and their 2 legs. Back in my day, we had to walk on 4 legs and had fancy looking sails on our backs."

[@Reignor99]

"When you think about life before the dinosaurs" ...bacteria? "Dimetrodons!" ...oh.. that's not a dinosaur? *grabs popcorn*

[@kaderxyz7160]

YOu forgot to mention that if you upgrade their melee, then they can act as pretty decent air-conditioners. You welcome

[@aesonandersson2533]

Nice ark reference

[@fermentedcabbage5722]

Lol underrated

[@greenninjaihyt5461]

Wait, I’m supposed to be upgrading their melee?

[@liliarubio3841]

What

[@Trailmaker.]

yeah, saves engram points for other stuff

[@joeys4289]

I just found this channel and I'm so happy that I did.

[@dougmcclure1568]

Dodo Bird same I am sure to sub to these guys

[@alexsolis9457]

Go back to bein extinct dodo bird.

[@hybridpower6619]

Dodo Bird same

[@TheOne-tn2hi]

Ssme

[@PickledPeterPicksPrettyPickles]

Same

[@danteanise3013]

I have loved Dimetrodon all my memorable life. I can sometimes see in my minds eye Dimetrodon running after it's prey using the stride of an iguana.

[@bladeheim9248]

Dimetrodon lived around 295-272 million years ago, when earths continental mass was assembled and formed "pangea". It might be worth mentioning when talking about the geographical spread of this animal and the biomes it lived in. 4:29 Love the work you do! Keep it up Eons!

[@RandomVideoCommenterOME]

One thing I always found weird about Dimetrodon is how it and its main prey item share the exact same sail trait. Just one of those really strange phenomena in nature.

[@dracodracarys2339]

maybe it disguised itself as its prey "there is 1 dimetrodon among us" "sus"

[@livelybubbs6242]

“And these are my grandparents, about a million or so times removed.”

[@Asdf-wf6en]

Grandparents aren’t removed

[@MasterGX]

@@Asdf-wf6en they are from life

[@flap.d.jack247]

@@MasterGX oooooooooooo

[@Homo_sAPEien]

So crazy how if we were to see our ancestors long ago they would be totally unrecognizable. So cool.

[@lay-zboi9186]

Dimetrodon is lit👌

[@ashtonnardella2741]

Big AL Yeah, it is!

[@galil5386]

Lay-z Alburrito no it’s not lit if it was it would die even though it did die it wasn’t by being lit on fire and even if it did then I wouldn’t even say because it would be very sad

[@user-nx4nc9ob9m]

doge_ It was lit When it was going extinct.

[@zezekingyo2374]

@@galil5386 I sense your IQ is getting lower every year by your litterations being ignored by jokes.

[@snackaroo4568]

@@galil5386 dumbass

[@jaridkeen123]

Use maps of the time era so that way we have more information on where they were found today and where they most likely lived on their continent of their time

[@martinmortyry7444]

Oh, they used the time era map... the map of the Victorian Era. For whatever reason.

[@fart63]

@@martinmortyry7444 it would be pretty funny to see big lizards with back sails running around Victorian castle hallways

[@tlovehater]

Duh dinosaurs didn't have maps back then.

[@craigkdillon]

I am stunned. What is wrong with you people?? I read all the comments. Where are insults? Where are the diatribes of ignorance?? Where is the intolerance of disagreement??? Very odd. Very refreshing.

[@Reptrilian]

Craig Dillon I think its because we are all curious nerds lol.

[@_Muzolf]

Keep scrolling.

[@sambhrantagupta3522]

Because this page serves things which are tougher for ignorant people

[@billskinner7670]

Harl garl snarble wunf? Growl hiss roar! Incoherent prejudices hatred! Does that seem more familiar?

[@Alusnovalotus]

Craig Dillon you’re looking for the cardi-B and lil pump channel. They’re two icons down. This is for studying more advanced life forms than those.

[@Jarrett.p]

I love this new series!!! 10/10! Can you do one going over all the extinction events?

[@mongislort6440]

There is one extinction event right around the corner, so they should wait a little longer to include it

[@HuckleberryHim]

Mongis Lort That extinction event, the Quaternary or Holocene extinction, already started a few thousand years ago with the rapid extinction of, most notably, most of the megafauna of most non-African continents. Of course it is full speed now, with species going extinct literally by the hour.

[@spoopynazi6538]

Marxist Alpha Let's kill ourselves, that should save the planet

[@vampyricon7026]

jarrett p All six of them please!

[@mrx4022]

Me: "Hey guys meet my grandfather, couple million years removed." My sister: "Try a couple _species_ removed."

[@SitInTheShayd]

I understood that reference

[@mrx4022]

@@SitInTheShayd Dinosaur 2000

[@Jacobpando1]

Just saw that movie the other day lol

[@robinchesterfield42]

Ooh, I love the freaky Permian creatures. Mainly BECAUSE they were so weird--when you look at them, your brain tries to tell you (for example) "lizard" and "dog" at the same time, and eventually leaks out your ears. We humans don't do so well with almosts and in-betweens, we like to just (snaps fingers) put things we look at in a definitive little box. And it's so cool to think that these weird things were actually our direct ancestors. I'm also fascinated with creatures of this period because (a) you hear far less about them than other prehistoric creatures (so...what, I'm a paleobiology hipster? "Dinosaurs? Cenozoic mammals? Pff, I'm into synapsids these days. You've probably never heard of them.") but seriously, the fact that we DON'T hear about them so much makes them more interesting and (b) ...the fact that their story had such a tragic end. The Permian-Triassic extinction took away WAY more diversity than any of the other major disasters on Earth, and it was probably caused by something from within the planet itself, rather than a meteor from space...which makes it even scarier. Brrr. And I think we're all kind of suckers for a good Impending Doom story. And if you think about it, these guys are kind of _our_ "dinosaurs". Like, just as the bird-like reptiles (dinosaurs) aren't around anymore but their true bird descendants are, the "mammal-like reptiles" are completely gone but we have true mammals. Like that. Both in-between versions are now all dead (unless you count large scary flightless birds or platypuses), but were fascinating while they were here.

[@themockingdragon135]

I'm all for you being into Permian creatures. They are thoroughly awesome. Out of curiosity, are you aware of pseudosuchians? If you are, awesome. If you aren't, definitely learn something new and cool.

[@abhiprakash74999]

Paleobiology hipster is my new favorite clique. ♥️

[@grouchygoat]

We are all but children of lizard-dogs

[@sorrenblitz805]

Look at Scutosaurus it's technically a Turtle.

[@NS-wz2mc]

My son would love one on the placoderms (esp dunkleosteus). We're LOVING these-- thank you so much! He asks every AM if there's a new one 😊

[@phwallen5054]

An episode on flowering plants and their relationship with pollinators would be great

[@williamwebb9724]

How long did bugs have free reign of the skies before the first vertebrate flyers took to wing?

[@vampyricon7026]

+

[@KinshipCadet]

@William Webb I'd say about 70 to 80 million years.

[@theman9048]

William Webb 238 million years ago

[@Davros539]

A long time before that.

[@sirmeowthelibrarycat]

William Webb 😳 Are you asking about ‘insects’ ? Bugs are a specific subset of them with tube mouths and no jaws. PS. You could try visiting a science museum or library for further information . . .

[@ClevendSteamer]

Hank, huge fan. I've always wanted to figure out what is known is about the evolutionary process of when mammals stopped laying eggs and began giving birth. My main question is how quickly did this change occur. How would an animal I'm the middle of that long transition give birth. Would love to hear you discuss this.

[@leeleaman8057]

Eons has a video on this if you’re still interested (:

[@ClevendSteamer]

@@leeleaman8057 thanks! I have seen it since posting this comment.

[@WatchingFromHeaven]

By recent researches, his spin was not like sail - upper half was naked, spikes on spine, that often went broke by accidents/defence. And other half was covered by muscles (look at Rhino's skeleton for example) and fat on top of that (to collect energy).

[@SKy_the_Thunder]

There's also the theory that about half of Dimetrodon's "sail" was actually covered by a sort of hump - similar to a rhino's heavy back that is also supported by sail-like elongations on its vertebrae. This would provide more space for powerful muscles to run down its prey.

[@manospondylus4896]

SKy_the_Thunder But for what would these muscles have been useful, if larger animals like Sphenacodon apparently didn't need them? What if instead Dimetrodon used its hump for fat-storage?

[@ahmad-qz7hi]

There was another theory that the upper half of the hump was actually exposed bone, because sail-injuries would probably be deadly if they had a membrane, while the exposed broken bones would heal much easier.

[@rebelbeammasterx8472]

Seems similar to Bison and Buffalo.

[@achamberednautilus1847]

Large hump of muscle, grizzly bears also have the same things and they are large predators. Though grizzly bears eat mostly plants, maybe dimetrodon was also happy to eat vegetable matter every no and then. It's not too unlikely, wolves eat berries and leopards will eat grapes and melons

[@agilemind6241]

But how did they deal with the torsional forces that the sail (membrane or no) could cause on the spine? Twisting a single vertebra can't be good. Most muscle-based vertebra extensions are focused close to the shoulders (for quadupeds) not the centre of the back - as I believe dimetrodon's was, though maybe this could be explained by it's not-quite mammal & not-quite lizard gait.

[@dan240393]

My mind is now consumed with images of Dimetrodon poodle-strutting about, looking absolutely fabulous.

[@yoo7289]

Dimetrodon is one of mine favorite creaturs

[@schuylerhoppmann5661]

I've been enjoying this show so much! I would love to learn more about early mammal evolution! Where do marsupials and animals like platypuses and echidnas fit in?

[@Okenpo]

I loved studying Earth history. This channel is so refreshing to me. Keep it up guys, please. I can't wait to share this with people as dorky as me.

[@rocky5152]

We are NOT Dorks! ......We are Orks! nanoo nanoo, Shazbot!

[@bobbymccabe2825]

This episode made me more emotional than I expected. It's like I was watching a video of my grandfather growing up, or something like that. Maybe it was the sentimental, atmospheric music.

[@Parkthom]

2:21 the emphasis on 'Oklahoma' in the way this is phrased contorts the meaning of the sentence to 'Dimetrodon made Oklahoma'. Brought a smile to my face.

[@1cosplayaway]

Does anyone else really love his voice and like want a playlist of just the videos he does. Just me ok cool

[@olivergs9840]

''Stem mammal strut'' is a term that deserves to be used more often

[@AIFMusician]

Okay the images of Beaver, Sabertooth, and then cheesin’ Hank really got me. 😂

[@josuelservin2409]

Dear Hank, this episode was beautiful, thank you.

[@57hound]

I am loving this series! Consistently fascinating and well presented.

[@jules1again]

Thanks for putting the ad at the end

[@andycorteous]

So many great shows you are in (or have a hand into) and so many responsibilities which leaves me so little time to watch them awesome work.

[@CandySouvannarangsy3187]

Juveniles' sail grow faster than their bodies The sail could've been used to attract mates Confirmed Dimetrodon went through puberty lolz

[@carmelosaurus7480]

I love this new series & maybe for a new topic for a future episode maybe if you guys talked about T-Rex's size & weight range.

[@wuthogplays4760]

I didn’t know about the Permian until 5 months ago, and I’m now discovering dimetrodon

[@mdp2920]

I am absolutely addicted to this channel!!!!

[@SysterYster]

I have always loved Dimetrodon. :) One of the first "dinosaurs" I knew the name of. And yes, I actually knew it wasn't a dinosaur. I was very proud of that fact as a kid.

[@ElizabethLopez-hx6xv]

Earliest I've ever been to an Eons episode. Great job, I love this channel!

[@Saurygiel]

Amazing video as always, I love the illustrations!

[@DepecheMoser]

Such an amazing channel, thank you!

[@katiesjg3146]

i f'ing love the music in this. makes me feel focused/productive

[@aracelimorareyes5168]

Thank you for this ! My heart and brain are smiling , I love dimetrodon.

[@theoldar]

I am always delighted when people teach about the pre-Triassic past. Dinosaurs are great, but there is so much cool stuff from even earlier.

[@whippetgood1806]

This channel is quickly becoming one of my favorite subs to see new videos from. Keep up the good work! :)

[@sinantara665]

Now I know where my aunt Agatha got her looks from!

[@Rennoch]

do should do an episode on the evolution of venom and toxins as hunting and defense mechanisms, like how for decades we thought komodo dragons had septic bites, until someone did the testing and found out they had venoms mixed in the bacterial soup.

[@lalo360elite]

This is my new favorite channel! I wish you guys would put out more than one video a week.

[@The_Bermuda_Nonagon]

I always enjoy a good bask in the morning sun, maybe it's a distant primal memory of the quick solar sail fin warm up - followed by running about biting meaty chonks out of all the other animals who were not early risers. Maybe that why why we still say stuff like "Don't skip breakfast, it's the most important meal of the day . . . " : )

[@craigkdillon]

Let's keep it simple. The Dimetrodon sail was..... a sail. 1. The sail would be used to help it cross wide rivers. Catching the wind and tacking its way across. 2. Female Dimetrodons would select her mate from the winners of sailing races that would take place every Thursday in local lake, with the females lounging on the beach, giggling and talking about the size of the male's sails. Yes, the Dimetrodon was definitely ahead of its time.

[@jordanbrown8743]

Terror Birds. Definitely an episode about Terror Birds.

oh yes, it is a very interesting case of convergent evolution which almost borders on reincarnation as terror bird hunting styles almost seem like an improvement on what tyrannosaurs perfected. I would love to see a terror bird discussion.

[@Jungleland33]

Happens most women every month.

[@namcohoroshy5688]

Thank you for this amazing video!

[@Devantejah]

I like the idea of the Dimetrodon being bouyant and using the sail for propulsion.

[@stardude2006]

Since I was little I’ve always thought Dimetrodon was cool ! 😎❤️

[@marcuspradas1037]

Dimetrodon is one of my favorite ancient animals. So many thanks for this video. I take it that we re related but provably not direct descendants.

[@Frediloc8]

I'm loving the new music you are using!

[@dylantoombs534]

Amazing video! I love this channel, always bound to learn something very interesting, it keeps me tuned in.

[@elijahbennett88]

Proto-doggo!

[@kenjikunuwu3644]

It's also our proto-grandma and grandpa

[@steveletterman7121]

scientists be like, let's call this primus canis. Yes cool name we're awesome lol (primus latin for proto, canis is latin for dog)

[@Infernoraptor]

Episode ideas: Placorderms: how do they relate to the surviving lineages? Why did they come to be/die out, etc) Therizinosaurs: what can I say, I find the pot-bellied turkeys hilarious) tiny theropod arms Trees and lignin: how a single organic compound became so successful and so abundant and why is it so hard to digest? I'm sure there are others but those are a good start

[@manospondylus4896]

Infernoraptor Evidence is accumulating that a species of placoderm was actually the ancestor of all jawed fish that live today (and consequently of all tetrapods). So technically placoderms aren't extinct, because we are their descendants.

[@Infernoraptor]

That's the first i'd heard of that hypothesis. Interesting, but that's not to say an episode about them wouldn't be interesting. Plus, what you are saying is somewhat odd. If placoderms, which definitely had true bones, are the ancestors of all gnathostomes, does that mean chondrichthyans evolved from bony fish or did jaws evolve twice?

[@manospondylus4896]

Infernoraptor I'm sorry, I looked it up again and you are right. Only bony fish evolved from placoderms.

[@dabbingsonlastname3140]

Placoderms are the ancestors of all fish.

[@kaytk1762]

T. Rex arms were pretty strong.

[@mrrodriguez2947]

I forgot all about this one!! Ty for this,I was mesmerized by this creature in my school days

[@al_sprays_paint8669]

This is one of my favorite videos on this channel

[@joelhellsten6944]

Me: "Wow, this video is really interesting and educational. I wonder what is next on the Recommended page..." *Why Starscream Can Never Die by Transformers Facts*

[@StManco]

Starscream: literally dies all the time

[@omnia001]

Life is so beautiful, just the beauty of evolution am i right

[@quincy2090]

I still remember when I was little and everyone tried to tell kids that the dimetrodon lived with the dinosaurs. Which they didn’t. They lived LONG before technical dinosaurs lived

[@yellabyrd5821]

Excellent episode!

[@adammatthews8889]

In your videos, like this one, you sometimes state that while these animals or others are related to humans, they are not our direct ancestors. Instead we share a common relative. Is there a list of species from which we know humans directly descend, irrespective of how far in the past? I didn't have much luck simply googling this. Thanks!

[@sorrenblitz805]

In short, yes, long windedly, yes but it's a very fragmented pathway. Because the fossil record can actually Never be 100% complete there's direct lineages we can never trace because the fossils just aren't there and going back further and further direct lineages are harder to define, more so we know that because we have these traits and these hyper ancient fossils also show it, these fossils are a distant ancestor of all mammals. Like we don't know what the first actual hominid is we only know what the earliest fossil hominid we've found is and I think I've seen videos that say that the earliest know hominids aren't even direct ancestors to us just cousins.

[@John77Doe]

I just started subscribing. How did I miss this channel. 😁😁😁😁😁😁

[@FelixPheonix]

I love seeing things about dimetrodon. I was assigned the Permian period in my 7th grade science class and chose to highlight dimetrodon. I don’t remember anything I wrote about it because there just wasn’t much info available about them online in 2003/2004. I was also assigned Pluto...shortly before its status was downgraded lol.

[@christophelesmacgillicutty9677]

One of my favorite eons

[@KwanLowe]

Thanks for the great video. I have a question that I've been unable to answer with mulltiple searches and hoped you can help. What was the population size of these different species? And as we get closer to our time, what is the possibility that an early primate fossil we unearth is a direct ancestor of a random person today? To me it's fascinating and humbling...

[@Ma75841]

Me: Hello DIMETRODON Dimetrodon: *makes hissing dimetrodon sounds* *me and my pet dimetrodon goes to the movies*

[@wikornchatnarattanakul3942]

Another great episode!!

[@Soviet1332]

That was a very well made video. I mentioned Dimetrodon on Quora and I fancied watching a video about him. This video was great. Going to subscribe

[@unknownusername5111]

THEY TOOK MY SUGGESTION! YAY!

[@jonryder7269]

and Dimetrodon remains my fave prehistoric animal.

[@clydebalcom8252]

I will always like Dimetrodon. It's just the coolest animal ever.

[@Olafleflibustier]

Great video ! Dimetrodon was so cool, i imagine this awesome creature alive in our era...wow !

[@missadixon3771]

I'd like to know what the latest research says about per-Cambrean life.

[@manospondylus4896]

Missa Dixon I know quite a lot about pre-cambrian, more precisely Ediacaran, life. Got any questions?

[@MrvoidPasta]

Yes, I have a question. Is it true that an expedition to an unknown mountain region in the artics lead by Professor Lake bored to a discovery of strange creatures whose bodies were shaped like barrels, heads were shaped like starfish with 5 eyes, and strange tentacles for feet? Apparently, they date back to the pre-Cambrian era. That's apparently in the Arkham newspaper, but who knows it could just be mountain madness. :)

[@bkr1895]

Unexpected Lovecraft

[@yankenbeanstrum648]

Mrvoid Pasta The 'Pre-Cambrian Super-Eon', not the 'Pre-Cambrian Era'.

[@MrvoidPasta]

._. you have bested me. BUT CAN YOU HANDLE MY TENTACLES OF TORMENT?

[@Ryan-el7zf]

Who does the beautiful paleoart for these videos? The drawings of dimetrodon, the tyrannosaurus in the opening bit, and the sinosauropteryx in the colours of dinosaurs video are gorgeous! I'd love to find their art! :)

[@lilitheden748]

So glad I found this channel. It’s great to see that there are people who are interested in evolution who can explain the topic in a correct and simple way. These synapsids are more interesting than the dinosaurs because some of them could be the early ancestors of the mammals. I subscribed to your channel, thanks for making these educational videos.

[@crystalheart9]

So interesting. I remember as a kid buying a pack of plastic dinosaurs and Dimetrodon was in there. I thought they were dinosaurs.

[@frankwu8385]

you've mentioned the Permian extinction event (the great dying) many times in your episodes. You should do an episode about it.

[@turtledragon8276]

Could you please do a video on how turtles evolved?

[@michaelpaliden6660]

ooz went down the drain into the sewer.

[@alvarogoenaga3965]

How? All the way down!

[@feldinho]

Amazing content! Thank you so much for that!

[@clairesavage1500]

The music in these videos is so good!

[@paulfoster5746]

I've heard there is exactly one creature that has survived intact since the (pre-)Cambrian. How about a video on long-term survivors?

[@someonejustsomeone1469]

Horse shoe crab?

[@leahpea5613]

Giant sloth episode seconded! And mega-fauna for sure. And extinction events other than the much discussed dinosaur extinction asteroid theory.

[@franklegalley6225]

A demonstration of how amino acids may have formed in the primordial soup would be very cool.

[@chtoffy]

Great show! Let's see how it keeps on evolving ;-)

[@fermentedcabbage5722]

Maybe we all are dimetrodons deep inside

[@lalo360elite]

Also if you could do one on artic dinosaurs, that would be amazing!

[@jpsned]

Fascinating!

[@ThunderMuffinMan]

This one has a great pace. Very energetic. and OMG, we're related to Dimetrodons....