#Paleostream 7/02/2026
this week on #Paleostream we sketched Guidraco, Dinosaurus, Eretmorhipis, and Protoichthyosaurus
i did finish last week's sketches but im too lazy to post them :P
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#Paleostream 7/02/2026
this week on #Paleostream we sketched Guidraco, Dinosaurus, Eretmorhipis, and Protoichthyosaurus
i did finish last week's sketches but im too lazy to post them :P
Result of the Jialingjiang Formation #paleostream! This might be one of my favorite Triassic formations, although I might be biased because I love hupehsuchians and this formation just manages to hold all of them.
This formation preserves the contents of a large, very salty and very warm lagoon during the early Triassic in China. Tidal zones with mudflats and stromatoliths would be common here but it was certainly no easy place to live. The diversity of organisms we have isn't very high...
But what we have is largely endemic. This part of China was quite isolated from the rest of the world and being the hostile environment made the animals that evolve here rather unique. However one should also mention that we deal with quite a bit of taphonomic bias here...
...because, while we have the well ossified marine reptiles often times preserved as complete, stunning specimens the rest leaves much to be desired. Not a single fish has been found up to this point but trace fossils attributed to fish make their presence likely.
The stars of this assamblage are certainly the already mentioned hupehsuchians, an enigmatic, endemic clade of weirdos. They range for 2 m long bony tubes, over filter feeding armored blimbs to tiny eyed swimming plush stegosaurs that would rummage through the sediment.
Most of the animals living here were rather small by marine reptile standards, probably because of the conditions they lived in, and yet this formation gave us, in my eyes, one of the most charming collections of Triassic goofballs. Size chart by me this time, did this a while ago.
Page 12 of Paleo Pines requests!
Flocking Together #108
Guidraco/Dinosaurus
Eretmorhipis/Protoichthyosaurus
Kid maned birth
What
Kid
Kid named
Huh?
Kid mamed
Uhhh
Eretmorhipis
For the past month I have been partaking in a monthly drawing challenge.
A preface and first week
This isn't the first time I've done so, but it is the one I have done to such a consistent degree.
When I saw the prompts for a full month of PREHISTORIC mermaid designs, I immediately jumped into the challenge. The prompt choices were varied, and also filled with plenty of obscure genera. Many of which I probably would not have drawn otherwise, I mean, have you heard of Cycleryon? Eretmorhipis? Yawunik??? Die hard paleonerds probably have, but even I was unfamiliar with some of these prompts..
With so many different and varied creatures with different forms, body types, and biological families, it proved quite the interesting challenge to portray them as unique and coherent mermaid designs. But this is part of what made it fun to do, I've had to think outside the box for some of them, and even for the more straightforward ones, I've done my best injecting my own creative juices in making interesting Prehistoric Mermaids.
Credits to the prompt by Subjectively on YouTube, or @magik_jack_art on Instagram. I have been following him along for some time for both his fakemon and creature designs, and they are just genuinely creative and fascinating.
With that out of the way, let's get on to the first round of Mesozoic Merms:
Week 1: Triassic
Day 1: Conulariida
The Conulariida are a group of shelled cnidarians that lived from the Edicaran period; some 545 million years ago, all the way through the late Triassic period. They were sessile animals that likely possessed tentacles to capture prey.
My first thought when I saw this prompt was "what the hell is this?" And then afterwards "It's a marine flowerpot." Flowerpot or not, this was what I had to work with. I went with a gorgon-inspired look, and she turned out pretty cute for a day 1 piece. Looking back, she did end up looking a lot simpler than many of the later works in both concept and execution, but I still like her regardless.
Day 2: Cycleryon
Cycleryon was a crablike decapod that lived in the Jurassic period (not Triassic! I didn't make the prompt!). Anachronism aside, My design for it was fairly straightforward. At first I didn't quite know what to make of this creature, but after looking through many species of crustaceans and the like for color reference, something suddenly clicked:
Tokusatsu crab.
It's probably the least human-like of my Mesozoic Merms, but they're an interesting one to me.
Day 3: Eretmorhipis
Eretmorhipis is a marine reptile from the Triassic of China known for its broad, fan-like fins (its name literally means "oar fan").
You can clearly see where the influences lie, now :]
Her color scheme is personally one of my favorites. A little bit of Chinese water dragon, and a touch of lotus flowers, all wrapped up in an elegant assemblage of flowing fabrics, fans and bows.
Day 4: Cyamodus
While it looked like a turtle, Cyamodus was actually a Placodont, and a member of Sauropterygia (for non paleonerds, Sauropterygians included animals like Plesiosaurus). It was a durophagous, feeding on hard-shelled organisms like shellfish.
This one partly inspired by ancient Chinese armor, which some of them did use turtle shells! (I know it isn't a turtle, but close enough.) I still went in with the details though, including the hair tied in reference to the segmented shell, and all that damn armor detailing..
Day 5: Chinlea
Chinlea; named after the Chinle Formation, was a freshwater coelacanth, not unlike the modern day genus Latimeria, though it did go extinct by the end of the Triassic.
I was suggested by @temoti to give her a lil meat on her bones, and thus, we have ourselves a chubby Coelacanth for this week!
I'll be honest she might be one of my favorites I've done for this week. The colors, the personality, even the little freckles sprinkled on her.
Better watch out for that Saurichthys though..!
Day 6: Trematosaurus
Trematosaurs were large temnospondyl amphibians. Uniquely for amphibians, they were tolerant of saltwater, and as a result, one of the few fully-marine amphibians.
My design was.. certainly an interesting take on the animal. I was looking for a way to somehow integrate the creature's long snout as part of her design, and I eventually landed on a long cap. It took several redos of the sketching and color scheme before eventually deciding on a fire-bellied newt, and leading into a spunky streetwear-inspired girl by the end of it.
This month's designs were all originally planned to be 'one shots', but I like to think that she and the Chinlea gal would make a cute duo. A spunky, hotheaded gal and her more laid-back companion. Might make art of the two in the future, we'll see!
Day 7: Prosaurosphargis
Capping off the Triassic week, Prosaurosphargis was a fairly recent discovery (2023 at the time of writing).
It is a member of the Saurosphargidae (another family in the Sauropterygia) from the early Triassic period 250 MYA, only 1-2 million years after the Great Dying that wiped out
On to the Mermaid — or I suppose Man in this case, I don't have much to say, but I did reference leatherback turtles, and free divers. Oh, and I can't forget the cute little ammonite.
That's it for week 1's works. I'll soon get to posting the rest, and eventually all of them..! Once I get to finishing them...
Eretmorhipis was a Chinese hupehsuchian, more basal relatives of the Ichthyosaurs. Like so many other reptiles from the early Triassic, they were some weird little critters. Design by Greco Westermann sulc.us/eret
Eretmorhipis carrolldongi, a hupehsuchian marine reptile from the Early Triassic of China (~247 mya).
This species was originally named back in 2015, but at the time the only known specimens were missing their heads. It was assumed that its skull would have looked similar to those of other hupehsuchians... but now new fossils have been found, and it seems to have actually been much much weirder!
Eretmorhipis’ head was surprisingly tiny in proportion to its body -- sort of like a marine version of Cotylorhynchus -- and its shape convergently resembled the modern platypus, with a wide “duck bill” and very small eyes. It may have hunted for food along the seafloor in a similar manner to the platypus, using either a highly sensitive sense of touch or possibly even electroreception to locate small invertebrates like worms and shrimp.
It also had much larger bony osteoderms than its other known hupehsuchian relatives, forming a distinctive protruding spiky ridge down its back. At about 85cm in length (2′9″) it was one of the largest marine animals around at the time, so this structure probably wasn’t needed for defense -- but as with other hupehsuchians its actual function is still unknown.