#Shuvosaurus

[ambylotl]

NEW POST FOR PALEOSTREAM WAWAWAWA

Sillosuchus taking a nap under a tree near an oasis

Suchomimus hunting some fish

Shuvosaurus siblings exploring the forest undergrowth

Fukuivenator rivals fighting for dominance

I feel like 20 minute intervals is not the best way to develop a new artstyle, but i felt adventurous :3 i referenced some pics of landscapes to help make each one look different cause i am not super great at painting backgrounds X3c

[fangtalksdragons]

From last Fridays paleosteam

Sillosuchus foraging on horsetails.

Suchomimus stares at you in curiosity.

Shuvosaurus running across fallen logs.

Fukuivenator yawing.

[veloci-raptor]

Flocking Together

Sillosuchus

Suchomimus

Shuvosaurus

Fukuivenator

[arminreindl]

Benggwigwishingasuchus: The Fisher Crocodile

I once again come bearing news from the realm of Pseudosuchia. Yes, we got a new taxon. Benggwigwishingasuchus eremicarminis ("Fisherman Croc's desert song") is a new basal member of the poposauroidea, a clade you might have heard about before.

But first some more key notes. Benggwigwishingasuchus has been recovered from the Anisian Fossil Hill Member of the Favret Formation, located in the US State of Nevada. It is known from a decently complete skeleton that preserves much of the neck and torso, a decent chunk of the limbs but only small pieces of the skull.

Left: Press release artwork of Benggwigwishingasuchus looking across the Panthalassan Ocean (Jorge A. Gonzalez) Right: Fossil material

As said already, Benggwigwishingasuchus is considered a member of the poposauroidea, one of the most enigmatic groups of early pseudosuchians. The reason for that is that we primarily know them from their most derived members, the bipedal Poposaurus, the sail-backed ctenosauriscids, Lotosaurus, the ornithomimosaur-mimics of the Shuvosauridae and Qianosuchus. As you can see many appear kind of like proto-dinosaurs and most have lost their osteoderm armor, requiring a whole different skeletal structure to support their erect posture. But until recent years we knew little and less about where they came from. This is thankfully starting to change now, since we now not only have Benggwigwishingasuchus, but also Schultzsuchus (formerly "Prestosuchus" loricatus) described earlier this year, Mambawakale from two years ago and recently assigned to the group as well as Mandasuchus (similar to Mambawakale originally described as something else and recently considered as a basal poposauroid). Thanks to these we are slowly starting to see a transition. Schultzsuchus still has pretty standard armour for example, but Qianosuchus shows clear signs of reduction, with Benggwigwishingasuchus kinda falling into the middle between them.

Assorted Poposauroids: clockwise from top right: Poposaurus (Skye McDavid), Arizonasaurus (Gabriel Ugueto), Lotosaurus (Gabriel Ugueto), Shuvosaurus (Joschua Knüppe)

What's also interesting about Benggwigwishingasuchus is its ecology, or what little we can infer based on the circumstances of its preseration. You see, the Favret Formation preserves marine sediments and was previously best known for its ichthyosaurs (including the giant Cymbospondylus). So its kind of weird seeing a rather lanky pseudosuchian there. What's weirder still is the fact that the preservation seems to suggest that it wasn't swept out. No, its still reasonably complete, partially articulated and in the classic death pose with its back bent backwards, this thing was moved little before being burried. BUT. It wasn't marine. The skeleton fits of a terrestrial animal and both limb proportions and histology show no evidence of it being a swimmer or diver. Instead its hypothesized that it might have been an animal that inhabited the coast, possibly drawing sustenance from the sea but not actively adapted to forage in it. In this sense Benggwigwishingasuchus could parallel Ticinosuchus from Switzerland and Qianosuchus from China, both of which were coastal animals yet not explicitly aquatic (in the case of Qianosuchus it was originally proposed given its specialised tail, but recent work seems to suggest it was never very fast nor enduring).

Top image: Benggwigwishingasuchus standing on the skull of Cymbospondylus (Joschua Knüppe) Bottom left: Ticinosuchus among a group of Tanystropheus (Zach Robinson) Bottom right: Qianosuchus holding a fish (Gabriel Ugueto)

All in all, Benggwigwishingasuchus is an interesting animal that does fill in some gaps in the fossil record, both phylogentically and ecologically and though the description is sparce on actually describing the skeleton, here's hoping that more research will come out eventually. Hell, they dropped a histology on it like a day after it was named.

Wikipedia:

Benggwigwishingasuchus - Wikipedia Papers: A new pseudosuchian from the Favret Formation of Nevada reveals that archosauriforms occupied coastal regions globally during the Middle Triassic | Biology Letters (royalsocietypublishing.org)

Diverse growth rates in Triassic archosaurs—insights from a small terrestrial Middle Triassic pseudosuchian | The Science of Nature (springer.com)

[quark-nova]

Why crocodile-line archosaurs are cooler than you think

Pseudosuchian evolution is like really, really underrated. Like people learn a version of "crocodiles have been around for 200 million years" even though pseudosuchians have a super interesting and diverse history. Some forms even converged on the "primitive dinosaur" body plan, despite not being dinosaurs at all!

In rough order of divergence:

Desmatosuchus, an aetosaur

Arizonasaurus, a poposauroid

Shuvosaurus, another poposauroid (not a dinosaur!)

Postosuchus, a rauisuchid

Terrestrisuchus, an early crocodylomorph

Neptunidraco, a thalattosuchian

Baurusuchus, a sebecosuchian

Chimaerasuchus, a notosuchian

Simosuchus, another notosuchian

Anatosuchus, a crocoduck notosuchian

Yacarerani, yet another notosuchian

While bird-line archosaurs are fluffier, and have been much more widespread since the Jurassic, pseudosuchians displayed a much wider range of adaptations than we gave them credit for - from fully aquatic thalattosuchians to small terrestrial, herbivorous, armored notosuchians!

[draconesmundi]

I just got here from storyteller saturday ask and then this blog so can you elaborate on dragons being crocodile relatives?

HAPPY STORYTELLER SATURDAY

So crocodiles are part of a bigger group called pseudosuchians, which include things like armoured Desmatosaurus, leggy creatures like Saltoposuchus, shark tailed swimmers like Dakosaurus, beaked herbivores like Shuvosaurus... Pseudosuchians aren't often talked about so I was really happy when the little herbivorous Simosuchus had a spotlight on Prehistoric Planet!

Pseudosuchians are my favourite animals, all of them. And dragons are my favourite fictional animals, so basically I made draconic pseudosuchians. They have the same skeletal details and body plan, with a few fantastical elements...

Dracomorpha, the dragon group, split apart from crocodylomorpha back in the Jurassic. Dragons have overlapping scales rather than discrete osteoderms, and also have fleshy projections (fins, frills, wattles, barbels). They have horns, but so did some prehistoric crocodiles so that's nothing new. Many dragons have osteoderm rods on their shoulders and flanks supporting a membrane of skin, but so did some prehistoric reptiles. Dragons are venomous while crocodiles are not, and dragons fly using magical adipose tissue to generate a magic field, while most crocodiles cannot do this.

Many dragons are semi-aquatic and launch themselves into flight with a strong tail-propelled leap...

[knuppitalism-with-ue]

Results from the #paleostream Sillosuchus, Suchomimus, Shuvosaurus and Fukuivenator.

[saritapaleo]

Archovember 2024 Day 24 - Sillosuchus longicervix

As we know by now, pseudosuchians ruled the earth during the Triassic period, slotting into many different niches and utilizing many different body shapes than just the semi-aquatic crocodilians we have today. Poposauroids especially filled many of the niches dinosaurs would later come to fill, and even resembled them. Our previously visited Lotosaurus was convergent with hadrosaurs and stegosaurs. Poposaurus was convergent with theropod carnivores. The shuvosaurids resembled ornithomimid theropods, and one shuvosaurid in particular: Sillosuchus longicervix, reached sizes that would make the early sauropodomorphs tremble.

Sillosuchus lived in Late Triassic Argentina. The holotype, while still quite large for a shuvosaurid, was about 3 m (9.8 ft) long. But then, a finding of a large Sillosuchus-like neck vertebrae, as well as fragments of the tibia and ankle, pushed this animal’s size estimates up to 9 to 10 m (30 to 33 ft) in length, making it the tallest terrestrial pseudosuchian known. It would have had a beak like its relatives Effigia and Shuvosaurus, and likely used it to shear off plant material, reaching higher into the trees than any pseudosuchian would have ever hoped to dream. And since Sillosuchus came first, this makes sauropods the copy-cats!

Sillosuchus was found in the Cancha de Bocha member of the Ischigualasto Formation, which was at the time characterized by a dry climate with meandering rivers and seasonal rainfall. Sillosuchus would have lived alongside other dinosaur-like pseudosuchians, including the armoured Aetosauroides, the small, agile Trialestes, and the apex predator Saurosuchus. Dinosaurs would have included the early sauropodomorphs Chromogisaurus, Panphagia, and Eoraptor, and the early theropods Eodromaeus, Sanjuansaurus, and Herrerasaurus. Other reptiles would have included the silesaur Ignotosaurusm, the mysterious Incertovenator, the crocodile-like Proterochampsa and Pseudochampsa, the bizarre rhyncosaur Hyperodapedon, and the lepidosauromorph Taytalura. Synapsids like cynodonts and dicynodonts were also common here, and temnospondyls lived within the meandering rivers.

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!

[mineralsrocksandfossiltalks]

Sunday Scribbles: How to Draw a Coelophysis

I thought I would show you one way I draw dinosaurs. This character I am about to show you comes from a novel I am writing that takes place on an Earth-like planet where dinosaurs did not go extinct but evolved into an intelligent race called Avekians.

Niko is a Coelophysis, more commonly called a Ghost Ranch Tit by the locals (ignore the name on the page, I changed it when I realized it didn't fit the Avekian language anymore).

They hail from the Unkata Desert of Laranidia in the Kingdom of Kuloviu. Nico lives on a Krane ranch and belongs to the only human in the land, Dimitri.

Real Coelophysis lived during the Late Triassic Period around 210-201 million years ago in North America. They have been found in Arizona and New Mexico with possible remains found in Colorado.

Coelophysis was about 10 feet long and lived in seasonally wet forests alongside animals like Placerias, Smilosuchus, Desmatosuchus, Postosuchus, Shuvosaurus, and other dinosaurs including Chindesaurus, Camposaurus, Daemonosaurus, and Tawa.

An important think to note when drawing any kind of animal: muscle definition, meat! Fill in all the spaces! You should not be able to see the wholes in the skull or the shape of the hip bones. Remember, dinosaurs are not mammals and their legs should not look mammalian! Sometimes, I draw a basic skeleton outline first and fill in around. Perhaps I will show you that on a future Sunday.

The fun thing with most dinosaurs: you can make them any pattern and any color you want! We only know the color and pattern for a handful of exceptionally well preserved dinosaurs (Archaeopteryx, Microraptor, etc).

I based Nico's plumage off of two real life birds: Anna's Hummingbird and the Greater Roadrunner. Both found in dry, arid places in North America, one of the continents Laranidia is based off of.

Interested in Coelophysis? Well guess what? We might have found one out near our Evil Tree Bonebed site in our Triassic Chinle rocks. As part of our Field Paleontology Course, we teach students how to prospect. So if you want to come out this summer and help us find the rest of our potential Coelophysis, check out the link below. Hope to see you there!

[neovenatorgirlteeth]

(OK!!! couple of things to cover

A- This is the first entry in Weekly Artz 2023!!! I'm going to be posting a art every week, usually Saturday going forward, for the rest of the year. Today is going to be a double issue because last week I Forgor :(

B- I KNOW that this is more than 3 months late; I burned myself out but I still want to finish dinovember, so that will be the beginning of Weekly Artz 2023.

C-THIS IS THE BEST LIGHTING I COULD GET OK SHUTUP

Cool thanks enjoy)

DINOVEMBER DAY 11: 225MYA, NORIAN STAGE; ARIZONA, USA

It is now the Late Triassic in what will one day become the Petrified Forest National Park, where the flash floods that the lowland fern scrub experiences will preserve a perfect example of the diversity of the Triassic. The waterways are stalked by crocodile-like reptiles called phytosaurs, as well as massive flat-headed amphibians. Strange sloth-like lizards hang from the trees, and Placerias, a giant tonne and a half dicynodont, the last of their kind, use their tusks to dig for roots and tubers, disturbing the burrows of cynodonts as they forage. They are watched by the 6m long Postosuchus, a bipedal land-living relative of modern crocodiles, the apex predator here.

Other crocodile relatives include Desmatosuchus, who tramp through the undergrowth trusting their armoured backs will protect them from danger, and the beaked Shuvosaurus searching around for fruit. The crocodile-relatives are just one branch of archosaurs, a group of reptiles that have established themselves as the dominant animals on land. This Coelophysis is a typical representative of the other main branch; she is one of the first dinosaurs.

At this time, dinosaurs tend to be small and slender, fast and agile, just like Coelophysis. A number of adaptations help her carve out a niche in the world of the Triassic; her bones are hollowed out in a way that retains their structural integrity, making them lighter but just as strong. These gaps are occupied by air sacs, which store inhaled air in order to make her breathing more efficient. Finally, she has taken the first steps towards becoming warm blooded, and her feathery coat helps her regulate her body temperature. Despite their fame, dinosaurs currently only play a small role in the grand archosaur dominion: for now at least…

[ellaofoakhill]

My dear friend, thank you so much for your crocodile appreciation, but the idea that crocs and their relatives have only been Danger Logs since their split with the dinosaurs is simply not the case! Since their group, the pseudosuchians, diverged from the dinosaurs and pterosaurs almost 250 million years ago, they have held numerous ecological roles on every continent, including but not limited to:

Apex terrestrial predators, such as Postosuchus, Fasolasuchus (the largest terrestrial predator ever, outside the largest theropod dinosaurs, at 3-4 tonnes), Baurusuchus, Boverisuchus, Barinasuchus, and Quinkana. The latter 3 actually evolved after the time of the dinosaurs, and our human ancestors actually encountered Quinkana when they settled Australia.

Large marine predators, mostly the Metriorhynchids.

Armored herbivores, including the Aetososaurs, Simosuchus, and Armadillosuchus.

Large bipedal herbivores, such as Shuvosaurus, Effigia, and Sillosuchus.

And finally, small arboreal predators, namely the Mekosuchids.

Ironically, one role croc ancestors didn't fill back in the Triassic when the group first evolved was the Danger Log, because that niche was already filled, by giant amphibians, and by the crocs' archosaur relatives, the phytosaurs.

True, creatures we would recognize today as crocodilians have been around since at least the Late Cretaceous, but to say that's all they've ever been is overlooking an diverse and beautiful lineage spreading back nearly 250 million years.

love how crocodiles evolved like tens of millions of years ago and then were just like "boom. got it in one. dangerous log. that's my thing" and have been kicking it ever since

[bronzecats]

Me trying to remember every Homestuck related blog I've had.

Stuck in an account that I don't remember the password of / inactive:

@onlyhomestuck

@transhamsteak

@ihatedamara

@shuvosaurus

One's I can still access / active:

@femslashstuck

@queerjaneweek

@bronzecats (YOU ARE HERE)

@vriskanroserezi

@damtula

@hanglare

@condglare

@jadefef-ship-archive

-

And others that I have deleted over the years.

[dynamoterror1011]

Tonight’s flocking-together paleostream sketches (minus the last one because I had to get dinner).

Top-left is a pair of Sillosuchus, one of which is trying to escape the midday sun under a cycad. Top-right is a mother Suchomimus guarding her mound-shaped nest, alongside an Araripesuchus (which has put its own eggs within the mound for protection). Bottom-left is a pair of Shuvosaurus, screaming into the sky. The male has a speculative keratin extension of the beak, used in display.

[alphynix]

Once again it's a PBS Eons commission roundup day!

An unnamed Cerro Ballena rorqual whale and the long-necked seal Acrophoca, from "How the Andes Mountains Might Have Killed a Bunch of Whales" https://www.youtube.com/watch?v=iNk6r5WljGc

The poposauroid pseudosuchians Shuvosaurus (life restoration) and Effigia (skeletal) from "When Dinosaur Look-Alikes Ruled the Earth" https://www.youtube.com/watch?v=QsmV34Co32c

———

Nix Illustration | Tumblr | Pillowfort | Twitter | Patreon

[shinonart]

#ArchosaurArtApril Day 11 - #shuvosaurus . Here's a cute little dino! I had fun with the proportions. I still have a bit of catching up to do but so far so good! . . . . #archosaur#sketch #sketchbook #smltart #paleoart #animalart#animals #animalartist #drawing #pencildrawing#pencilart #traditionaldrawing #traditionalartist#traditionalart #dailydrawing #dailyart #instart#instartist #artistsoninstagram https://www.instagram.com/p/BwPt4zYp_WO/?utm_source=ig_tumblr_share&igshid=m19k9hii1lk

[deepseaspriteblog]

what about human Equius Crocker? (Eric? Emir? Erez? Eiri? Erdi?)

Erez Crocker!