Ianthasaurus: An Early Sail Backed Synapsid

[@UsagiMimiChu]

In this channel, I always leave understanding or learning something new about evolution and how it applies to nowadays species. I like that a lot!

[@legendre007]

It’s always good to learn about sail-backed synapsids besides Dimetrodon. 😊

[@Fede_99]

I love how back sails were the trend of the Early Permian

[@hoominwifquats]

I love your consistently great vids. They're not only highly educational but so well put together the learning doesn't hurt at all.

[@reverseuniverse2559]

I’m thinking larger looking lizards look more aggressive so I think the sail is to make them look larger just like a frilled neck lizard expand to scare away predators especially if attacked from above

[@IanPendleton-gh6ox]

CHimerasuchus mentions the same at 7:05.

[@reverseuniverse2559]

@@IanPendleton-gh6ox Yep I’m agreeing 👍

[@ConFon-ut8ri]

Well done ♥️

[@TheAnimalKingdom-tq3sz]

5:16 lol Amphibian: *"I WANT TO LIVE!"*

[@bensantos3882]

This channel never ceases to amaze me with random overlooked extinct animals that never get the limelight like T-Rex!

[@DeadJack1999]

Its interesting how sails evolved twice in pelicosaurs

[@gattycroc8073]

makes me wonder what other strange and fascinating creatures are yet to be found in the fossil record.

[@mlggodzilla1567]

Another great video 😎

[@dansmith4077]

Excellent video

[@mguerrrero]

I love sailed synapsids. Also, the amphibian Platyhystrix is 🔥

[@WanOlDan]

Great video. As usual, as expected.

[@PaleoJack-The-animator]

Awesome video

[@Kapnohuxi_folium]

You should do a video on albanerpetontidae at some point. They're easily some of the coolest lisamphibians, and they only went extinct pretty recently. Yaksha Perettii is a cool one with quite a bit of research done on it, might be a nice place to start 😉

[@Darth-Nihilus1]

I have been fossil hunting all around western Pennsylvania and eastern Ohio. I have donated a set of tracks from Batrachichnus. Also the Carnegie museum has it documented that Edaphosaurus was found in the Pittsburgh Red bed from the end of the Glenshaw formation in Turtle Creek Pennsylvania my home town. I find mainly plants from the Monongahela formation on the top of the hills to the Pittsburgh Red bed of the Glenshaw formation. I have found everything from bivalves, crinoids, horsetails, ferns, Lepidodendrons, and a ton of other stuff around the area. 😅 if you want to donate something to the museum you’ll need legal documents from the land owner and then the fossil will have to be as approved by the museum. It can take months

[@DeinoWolfhybridhero]

I adore all these Permian sailed guys

[@thelaughinghyenas8465]

Very interesting critter I never heard. Thanks! Also, thanks to the Mandelorian for a great narration.

[@megaguriusgaming]

Nice vid can you do a vid on mastodontasaurs? Also here to prevent people from saying first

[@posticusmaximus1739]

Whoa!!! another sail back stem mammal!

[@SYMBIOTEDINOSAUR]

Fascinating

[@mguerrrero]

Can you please make a video about gryposuchus. Literally, no one has a video discussing it! It's a cool Croc. Also, I just love gharials

[@chimerasuchus]

I probably will eventually, but I am trying to space out the videos about mega-crocs.

[@mguerrrero]

@@chimerasuchus understandable

[@walterfechter8080]

Ianthasaurus is cute!

[@brianedwards7142]

Cute little bludgers.

[@edwardfletcher7790]

"Ian tha Saurus" is a great name for a Paleontology rapper 👍 LoL

[@stefanostokatlidis4861]

So early omnivorous stem mammals were growing more like iguanas or turtles.

[@dagoodboy6424]

Cute lil bugger

[@AifDaimon]

I'd like to think the sails eventually became an easily exploitable weakness over time, which may explain why there are no terrestrial animals that have sails.. The only known extant animals with such a feature are, of course, the sailfish family & Man-o'-War jellyfish family.. Edit: do correct me if I'm wrong about which existing animal groups have sails on their backs

[@posticusmaximus1739]

Crested chameleon

[@AifDaimon]

@@posticusmaximus1739 ah yes.. I completely forgot about that cute lil guy!! Thank you for mentioning it.. I probably should've mentioned that the sails seen in these early synapsids served a completely different purpose to the sails we see today: crested chameleons use them for mating displays; sailfish for increased speed & Man-o'-War jellyfish for a variety of uses

[@jameshall1300]

Man of War isn't actually a jellyfish. It's related, but it's a colony organism called a siphonophore.

[@ExtremeMadnessX]

Basilisk lizards: Are we joke to you?

[@AifDaimon]

@@ExtremeMadnessX whoops

[@HassanMohamed-jy4kk]

I’ve got some great ideas and some great suggestions for you to make KZbin Videos Shows about some more Prehistoric Extinct Crocodilian Species, such as Lazarussuchus, Plesiosuchus, and Metriorynchus adding that to the episodes on the next Chimerasuchus coming up next!!👍👍👍👍👍⭐️⭐️⭐️⭐️⭐️

[@Zekeriyasenturk6513]

İ love this,youre making a project named *New Hothouse Period* a youtube original series have a google site about in 200-300 million Years after,this era called *Hundrozoic* means in Hundred!!! Now tetrapods are extinct,land dominated by echinoderms,crustaceans like crabs,Bryozoans and Gastropods like sea slugs,but vertebrates are not extinct,new land vertebrates are not tetrapods really have many legs now reptile-like *Scalands* and Bird-like *Flyeathers* mostly paleozoic or triassic vertebrates

[@RemusKingOfRome]

Are these linked to Stegosaurus ? Maybe the sails morphed into bone plates ?

[@jameshall1300]

They aren't closely related. Synapsids are a separate group of animals.

[@chimerasuchus]

Stegosaurs were dinosaurs, not synapsids. Their plates evolved from osteoderms rather than neural spines. That said, stegasaur plates and edaphosaurid sails have been proposed to have had similar functions.

[@Dinoslay]

Ianthasaurus: (Jeff Goldblum laugh)

[@shockdrake]

What is the genetically closest modern animal of Ianthasaurus?

[@chimerasuchus]

All mammals are equally close to it.

[@guillaumebabey4484]

I didn't give my permission to use my illustration (at minute 4:28) so I would like to know your policy on that matter. Still, kinda happy to see my work get some attention and I am glad it's at least properly credited.

[@chimerasuchus]

The image was put under the Creative Commons Attribution-Share Alike 4.0 International license.

[@guillaumebabey4484]

@@chimerasuchus I don't know if I posted my art under this international licence. If you could tell exactly where you find it I may try and see if that's accurate.

[@chimerasuchus]

@@guillaumebabey4484 It was on Wikimedia Commons.

[@guillaumebabey4484]

Yeah that's not right. I never put on Wikipedia myself. Someone reposted it without my permission. At least they didn't forget my name.@@chimerasuchus

[@PaleoJack-The-animator]

The dimetrodon on a diet (diet-metrodon)

[@iceworld6104]

guys quick question i remember seeing the answer here in the comments but i forgot wat video it was. so basically wat animal group ruled? before the dinosaurs i know there was a big extinction that allowed them to flourish. and who took up the niche of the dinosaur shortly after. i know it wasnt mammals yet it came later.

[@chimerasuchus]

During the Permian Period (roughly 300-250 million years ago) the dominant large land animals were synapsids, the distant relatives of mammals. Most were rendered extinct during the mass extinction at the end of the Permian, and they were replaced by the archosauromorphs, the group of reptiles dinosaurs and crocodilians belong to, early during the Triassic Period. While archosauromorphs were "dominant", there were still a few large synapsids, and the crocodilian branch of Archosauromorph, Pseudosuchia, was actually more abundant and diverse than the dinosaurs. That only changed due to another mass extinction at the end of the Triassic, which left the dinosaurs as the only remaining large to medium sized terrestrial animals. So the rise of the dinosaurs was actually the result of two mass extinctions. After the non-avian dinosaurs perished, there wasn't really a dominant group of animals. Some birds and ectothermic reptiles grew bigger, but large animals weren't common until mammals finally took up the mantle.

[@iceworld6104]

oh thanks for responding? but wat about the stem dinos and the crocs that walked on 2 legs werent they also occupying a niche that prevented the tru dinos from taking it until they died.@@chimerasuchus

[@chimerasuchus]

@@iceworld6104 Yep. The Carnian pluvial event early during the Late Triassic opened up niches for the dinosaurs, but they weren't the dominate archosaurs, let alone the dominate animals, until after the end-Triassic mass extinction.

[@iceworld6104]

hmm interesting thank you for answering this was on my mind for a while now and i couldnt find a good answer.@@chimerasuchus

[@silver1788]

Why Why Why did i read sail backed as ball sacked Why is my brain like this

[@WaddyMuters]

Kind of irresponsible to not give the most well established reason for the back sail. In fact most experts today believe that the sail was used as an escape mechanism. Two Ianthasaurs embracing could form a perfect pair of wings to take flight an escape danger. That’s also also who pairbonding in mammals evolved. Dimetridon obviously evolved the sailback through evolutionary pressure to give case.

[@nightshadeentertainment6568]

Nice video as always. I must add that calling it a Pelycosaur or a "Mammal Like Reptile" is now an outdated practice. Primitive Synapsids or STEM Mammal would be more accurate. That said, If you can, can you please do a Rutiodon video please? Love your content as always

[@chimerasuchus]

After having made videos about the topic for so long, I have found that using paraphyletic grades as common words (as "fish" is used) can be quiet helpful when trying to communicate these topics. In this case, the term "pelycosaur" was used to not just distinguish these early synapsids from mammals but from the rest of the therapsids which dominated the later half of the Permian Period.

[@nightshadeentertainment6568]

@@chimerasuchus understandable within that context lml

[@jgr7487]

Weird body parts are, usually, related to sexual selection, so our lizard-like female ancestors might have found sails super hot.

[@sosa9754]

Would love to see a video on therapsids and gorgonopsids!