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Castorocauda
A genus of docodont mammaliaform from Jurassic Mongolia. With an estimated length of about 0.5 m. it was one of the largest mammaliaforms of its time. They are also one of the first mammaliaforms with aquatic adaptations and probably behaved like modern day otters.
artwork by Mark Klinger
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Here’s some of the amazing diversity of Mammaliaformes of Jurassic China. Volaticotherium glides in pursuit of a tasty bug. Agilodocodon, an excellent climber, already got one and brings it back to its young in the trees. Some Docofossors are digging up the lawn. Castorocauda, the largest mammaliaform of the Mesozoic, is going for a swim. With the exception of Volaticotherium, these are all Docodonts, a group closely related to the crown group mammals, having branched off a little before the monotremes did. I wanted to show off how much more diverse and interesting Mesozoic mammals were than we usually imagine. They did a lot more than cowering from dinosaurs and being eaten by them!
That said, Jurassic China also had some really cool dinosaurs.Yi qi, the actual real-life dragon, is going for a flight. A truly enormous Xiaotingia is having a drink. Please mentally halve the size of that big boy, I accidentally drew it way too large, that is a little birdie that should be easily outsized by Castorocauda. Finally, being neither a dinosaur nor a mammal, the not at all confusingly named pterosaur Cascocauda is sitting in the trees getting ready for a flight.
Instead of doing inktober this time, I’ve been doodling Sciartober prompts. Not all of them, and I started on day 11, got carried away with one of them, and I have no idea when I’m going to finish it, but here’s what I’ve done so far. So, day 11 - fish. Or in my case, a happy Castorocauda trotting home with a nice, big, juicy one. Day 17 - invisible. Hoplophoneus trying to dissapear from view. Day 18 - in the ocean. Basilosaurus, because of course it is . Day 19 - mammal. Fruitafossor, probably the earliest known relative of therian mammals. Day 20 - tiny. Hadrocodium, cause it tiny. It was an early Jurassic mammaliaform that was pretty cloe to crown group mammals. I kind of screwed up the thumb, and for some reason the shading looks much worse than it does in person. I also made two versions of this, but I decided to go with this one, because while I prefer the hand in the first on, it had really stark, dramatic light and shadow that detracted from the Hadrocodium. I should have predicted that drawing in a room lit only by small desk lamp will do that. I also managed to kill my back and left arm drawing these. Because of course I did.
Castorocauda and Chunerpeton
This is the first full painting I've finished since 2017 and hopefully just the start of a series of new paintings. I purposefully built this compositions around focusing on the more obscure elements of Castorocauda anatomy aside from its tail, which I feel is what usually gets all the attention in artwork concerning the animal. The plants featured in this painting are Wielandiella a divaricate bennettitalean from the same formation as Castorocauda and Chunerpeton.
Link to this painting on my artstationÂ
https://www.artstation.com/artwork/bKrXea
