#aetosaur

[fossilized-starlight]

Desmatosuchus 🌧️

[knuppitalism-with-ue]

Results from the Flocking #paleostream!

Himalayasaurus, Typothorax, Lunataspis and Kunpengopterus.

[cypressure]

flocking 5/30/2025 — Typothorax, Himalayasaurus, Lunataspis, Kungpengopterus

[gabipaleo]

🧵 A herd of Silesaurus opolensis, a medium-sized basal ornithischian, alongside the crocodile relative Stagonolepis olenkae, and the giant amphibian Cyclotosaurus intermedius, all found at the Late Triassic Krasiejów locality in Poland.

Silesaurus opolensis, a basal ornithischian dinosaur once thought to be almost-a-dinosaur, a dinosauriform. This slender, beaked quadruped from Silesia in southern Poland probably fed on plants and insects, as shown by its teeth and beetle remains in fossilised feces.

Stagonolepis olenkae, a relatively small aetosaur, distant relative of modern crocodiles. This armored herbivore from southern Poland was a low browser, with forelimbs adapted for scratch-digging and a shovel-like snout tip, likely used to unearth roots and vegetation.

Cyclotosaurus intermedius, a medium-sized temnospondyl amphibian from the Late Triassic of southern Poland. Its skull was about half a meter long, nearly a quarter of its body, allowing it to ambush fish and other smaller animals in rivers and lakes.

[ppaleoartistgallery]

#Paleostream 31/05/2025

here's today's #Paleostream flocking sketches!!!

today we sketched Himalayasaurus, Typothorax, Lunataspis (i drew L. aurora), and Kunpengopterus (drinking the nectar from a Weltrichia)

[saritapaleo]

Archovember 2025 Day 4

Pseudosuchian Typothorax coccinarum, of Late Triassic, North America!

Our next archosaur, and our first pseudosuchian of this Archovember is Typothorax coccinarum! Pseudosuchians, the lineage that would eventually lead to crocodilians, dominated the Triassic, and did many of the things first that dinosaurs would do later on. Typothorax was an aetosaur, a unique group of pseudosuchians that evolved body armor similar to ankylosaurs. Typothorax was herbivorous, possessing small, leaf-shaped teeth, and had an upturned, shovel-like snout. Their forelimbs also seemed to be uniquely adapted to digging, suggesting they may have found food by rooting around in the soil for roots and tubers.

Typothorax coccinarum is known from the Late Triassic Chinle Formation of Arizona, as well as the Bull Canyon Formation of New Mexico and Texas. In the Chinle Formation, Typothorax would have lived alongside other aetosaurs like Rioarribasuchus and Scutarx, along with smaller pseudosuchians like Hesperosuchus and Revueltosaurus. It would have been preyed on by large rauisuchids like Postosuchus and Vivaron. Other archosaurs Typothorax could have seen in the Chinle Formation would have included lagerpetids like Dromomeron, allokotosaurs like Trilophosaurus, and dosweliids like Vancleavea. Dinosaurs were only just getting a foothold in the Late Triassic, and Typothorax could have come across early saurischians like Chindesaurus and Coelophysis. In the Bull Canyon Formation, the environment was similar, with the addition of the giant, beaked poposauroid Shuvosaurus, as well as the aetosaur Paratypothorax and the phytosaur Machaeroprosopus.

This art may be used for educational purposes, with credit, but please contact me first for permission before using my art. I would like to know where and how it is being used. If you don’t have something to add that was not already addressed in this caption, please do not repost this art. Thank you!

[yee-qi]

and the end of Perspectives Triassic! This is a part of my Perspectives series, check out #perspectives on my blog for more!

"Placerias Problem" Placerias/Desmatosuchus Triassic, 220 million years ago, Chinle Formation During the Triassic, the continents were all one - this was, of course, the landmass Pangea. The presence of such a massive supercontinent produced an extreme weather effect known as the Pangean megamonsoon - a seasonal wind reversal taking the coasts from arid and dry to incredibly rainy. This is also the cause of the stampede we see here. Placerias was one of the latest-surviving dicynodonts. Having made it straight through the Great Dying, they'd experience a rediversification during the Triassic before dying out by the Jurassic's beginning. Not only did it have actual tusks on the inside of its mouth - it also had two "false" tusks on its beak - known as maxillary caniniforms! These were sexually dimorphic - longer in males and shorter in females.

Desmatosuchus was an aetosaur - a crocodile relative that died off after the Triassic as well. An armored back and spikes on its sides would have made for an effective defense against any predator, and it likely rooted around for plants and invertebrates in the muddy ground where it lived. Although its low profile might be effective in a predation scenario, however....this is no predation scenario.

[fluffyyutyrannus]

-ANGUIRUS-

A mutated Aetosaur from Iwato Island and the first kaiju Godzilla fought since his reawakening, despite the initial animosity Anguirus would later become Godzilla's greatest ally, often helping him fight more dangerous kaiju, the reason for this is still unknown.