Rauisuchians: Triassic Apex Predators 

2:05 The comparison looks more like a man having a bad day, when his pet Decuriasuchus comes up trying to cheer him up so he can throw a ball in the yard for it.

Maybe Rauisuchians died out at the end of the Triassic b/c the dicynodonts they preyed on tied out at the same time. The problem with being an apex predator is you need a lot of food to keep your super strong predator body going. Whereas the early dinosaurs were still (relatively) small & unspecialized at that point in time.

Fasolasuchus, the largest rauisuchian archosaur to have ever lived on earth

Imagine if the rauisuchians survived into the jurassic and cretaceous

Right when I feel a hankering for some Rauisuchian content, here you are. This is almost disconcerting lol

these animals look like Ray Harryhausen dinosaurs, I love them

I'm still so facinated about the sheer diversity of crocodile like species and I really want a nature documentary made that focuses on all these other creatures that have been found to exist, instead of solely focused on dinosaurs. There is so many types of creatures over different times that they can really blow people's minds with by introducing them to people who haven't learned about our historical fossil records.

Bruh this guy cannot be contained. Polaris is too powerful

These are some of my favorite extinct animals. If you describe them to someone for the first time, saying they look like a mix of a big cat, trex, and crocodilian wouldn’t be far off. It sounds like something a kid would imagine but the fact it was real is awesome.

Rauisuchian are my favorite group of non- dinosaur reptiles that we're made of mostly predatory hunters. Also this was a great video on these amazing predators,also hope your day is going well.

I've never understood why we don't have more prehistory documentaries on the giants before dinosaurs.

Probably one of my favorite groups of Triassic archosaurs

So let me get this straight ... These are not dinosaurs? Triassic period definitely my favourite epoch.

I love this channel because i learn about so many cool creatures that just arent mainstream enough to be widely talked about. Thank you funny polar bear man keep on stuffing random animals into my skull my friend

They really had convergent evolution of their skulls with certain dinosaurs like small T-Rex or type of large raptors.

These poor guys got their thunder stolen from them by the theropods.

Thanks a lot! I am a brazilian geologist and this video is very helpfull!

Bro I’m excited for that mastodon video. I hope you mention how crazy wide their diet was. I did a project last year on a paper discussing the huge variety of plants they at, stuff like flowering grown cover, some trees, and even aquatic plants

If you like dinosaurs, you should definitely consider listening to "Phanerozoic I: Palaeozoic" and "Phanerozoic II: Mesozoic | Cenozoic" by The Ocean. It's great prehistoric, big lizard-appreciating music.

Thank you very much! I learned a lot from this episode.

Jeez they look like a creepy cross between a dog and a crocodile

Really enjoyed this video - thanks a lot for sharing!

Can't believe I JUST heard of this channel right now, you're on the up and up I hope. Subbed.

Ah yes, the Majestic Prehistoric CrocoDoggo

Horse racing: ✋😑 Postosuchus racing: 👈😎

I think Rauisuchians didn't survived because they were large specialized terrestrial predators hunting midsized animals. When the habitats were deeply disturbed, their prey vanished, top predators gone extinct with them. Meanwhile, early dinosaurians were able to survive hunting insects, little game, and some of them also feed on seeds and plants. Crocodilians relied on their metabolism and quickly replenished supply of amphibians and fish. Our pre-mammalian ancestors probably took advantage of their ability to scavenge and hunt insects at night, and life went on with this new setting. This scenario happened again 150 Mya after that during the Cretaceous extinction and the ability to feed on insects and seeds using their beaks explain why only the avian dinosaurs survived.

They're like if Theropods were quadrupedal

All about adaptation. Turtles bury themselves in the mud until it’s safe to come out the larger ones had nowhere to take shelter. The ones that became larger and larger as well as bipedal was a major reboot after the archetypes before them in previous periods.

In addition to the creatures I mentioned in the comments of your previous video, I am also looking forward to videos about the short faced bears, entelodonts, odontopterygids, an introduction to synapsids, gorgonopsians, and the bone crushing dogs.

Still remember when Teratosaurus was considered a early carnosaur. Good video.

Will you be about to do a video on Thalattosuchins or Crocodylomorphs one of these days?

funny, I was just researching rauisuchians(specifically postosuchus kirkpatricki) for a personal project.

Cool video!

So did BBC base their 6 meter individual on Polonosuchus, or were estimates for Postosuchus just that big at the time?

Bruh finally someone does a videos about this species

Cool! For someone who is interested in paleontology and lives in an area dating back to the trissic it's really fascinating not to mention its by Dr polaris

would you consider doing a video on the American Cheetah? my favorite prehistoric animal next to Pterodactyl. 😭

Just one nitpick on an excellent summation on Rauisuchians; Postosuchus was named for the Post Quarry on the Kirkpatrick Ranch near the town of Post in West Texas.

i wonder if there was some kind of difference in their eggs or their reproduction that meant the large non avian dinosaurs survived the end Triassic and these didn't. Like maybe the geological activity then caused slightly acidic rain and the rausisuchian eggs couldn't tolerate it as well as the dinosaur eggs could and this tipped the balance.

Dr. are there any modern day places that correspond well with the ischigulasto formation? It would have to a warm lush floodplain with lots of araucaria trees. I was thinking mont panie in New Caledonia. But that area is mountainous.

The position of the foramen magnum on the skull would indicate if it was fully bipedal. Compare with the work done on Australopithecines.

My god those things were freaky. Cool channel :) Subscribing. Were they semi aquatic I wonder? Perhaps able to sprint on hind legs like modern iguanas

After watching the view about Thylacoleo, I find it fascinating that the all of these families end up producing a creature with very similar traits to that of a present day tiger. Quadruped that’s an ambush predator and one of the top predators. I wonder why it’s more advantageous to be bipedal though. You look at all the big time carnivores, I believe mostly in the Jurassic to Cretaceous like T-Rex, and Allosaurus. What does being bipedal grant you? The only things I can thing of is more powerful legs, which may allows you to be quicker(not sure though because those two legs are doing the work of 4). The second thing is that it would make them taller and maybe allow them to scare away other apex predators.

I wonder if Dr. Polaris will collaborate with Ben G. Thomas in doing some natural history videos?

Yes that’s ok and I hope you enjoy your holiday

Could you talk about sightings of late surviving mammoths in Alaska

Ur channel is tooo undertrated

Dr. Polaris, can you make a video on the silesaurs

Do we have any idea about the metabolism of those animals? Could they have an insulating body covering, or did they have crocodilian like scales? Is it supported any longer that crocodilians are in fact secondarily featherless? Could they gallop to chase after prey for long distances and do we have anything about their reproduction preserved? Also I didn’t expect that mastodonsaurus could be eaten by anything.

Rauisuchian in the TN looks like a scaly doggo fetching a little dinosaur for iit's owner. Idk it looks unironically cute. But always a new video's a new like.

The depictions of these guys reminds me of those awkward early drawings of iguanadon. I'd like to bet on more evidence supporting bipedality in these guys being discovered in the future.

A bit of pedantic correction: Post is in Texas. Post, TX.

if they survived maybe they became theropod like in appreance obviously.they would be more cooler cause they had scales

I'm so glad Vision from the MCU is doing this now

Caimans need this guy to make inspirational work out videos

Imagine being a monster girl of one of those things

So cool

Dr. Polaris 👍

Enjoy your holiday!

I feel what happened to these creatures is that they were too specialized it actually happened to alot of animals that went extinct they're too good at only one thing and end up failing in every other area it's sad really

Ticino, and by extension ticinosuchus, is pronounced with a soft c, as it is followed by an i. Thus in English orthography, you would have TiCHInosuchus. It is only hard if followed by an h, as that separates the c from the i.

Have a great holiday!!

Cool stuff

The animal at 10:11/10:12 does not match its description... forelimbs 67% the length of the hind limbs?

@4:48 looks like a mix between a Trex and a Crocodile

Awesome !1

Is that Zuldazar music?

They look like ancestors of the Therapod T. rex

I think I read about this in a book

I'm wondering, what happened to the video about deinotheres?

Seems nature designed a successful predator head design. To be continued with the dinosaurs.

Fasolasuchus is just scary Like if it was stil alive it would have been enough to hunt elephants

Fasolasuchus and Saurosuchus. 👍

Cheetah gators: we were the best land predator diapsids Rauisuchians: hold my beer

did Phytosaurs prey on Rauisuchians?

No point throwing all this half baked info in one go. It is actually detrimental

The WWD depiction of Postosuchus was horrible even leaving aside its posture (it’s oversized and way too sluggish, and the “bite, release and follow” mode of predation is based on inaccurate ideas about how some living predators hunt) It’s likely that they wanted to reinforce the idea of dinosaurs being “superior” to pseudosuchian archosaurs, so depicted Postosuchus as an “incompetent” animal on purpose.

Imagine if Rausuchian and crocodylomorph and crocodyloformes dominate the mesozoic instead of dinosaur i wonder if they develop feathers as well 😅

Presto is the besto, at least to me

Dr Polaris could the Fasolasuchus kill a teenage or young t rex or Maybe a adult rex

A friend of mine is married to a Polonosuchus...

wasn't apex when I was around

7 meters Holy Macaroni Batman!

Chadasuchus

Were these creatures dinosaurs?

who's this "et al." guy? XD

when you get cheat codes for spore then unlock the t rex head to bypass all low lvl animals lmao

well these guys did not avoid their pushups like T*rex

Weighty beasts

Ok I wanna be a fosalosuchus monster girls

I always wished these survived to modern times. They were like reptilian big cats.

rauisuchians i pronounce it "RuSsIaNs"

Oh boy!? Soo many imaginary monster out there back then..

I wonder if this guy is getting all this info from quotations cause I been reading about dinosaur fossils and they have never found a complete dinosaur 🦕 he speaks about them like he was there when they were alive 🤔

I listened for one minute, and then realized that this channel believes that a normal volume is creeping Communism... :( Since I can't hear it, I'm outa here.