3D Anatomy Studiosさんのイラストまとめ

On the left: a macuahuitl. On the right, the newly described dinosaur #Stegouros elengassen, published this week in @Nature https://t.co/mpom5FvPA4 (paywall) #SciNews #FossilFriday

Out earlier this week, a #pterosaur specimen shows evidence of a muscle bridging the junction between the body and torso, which is interpreted as a "fairing." You've got to love this illustration. #SciNews #FossilFriday

Just when you think you've seen it all... Here are a few species described just this year!

The age of the fossil (225-231 million years, alongside some of the earliest dinosaurs) also suggests that lots of lepidosauromorph lineages (lizards and relatives + tuataras and relatives) coexisted early in the Mesozoic. 🎨 by Jorge Blanco

The recently described #Taytalura alcoberi is on the lineage leading to both rhynchocephalians and lizards/snakes. This beautifully preserved skull analyzed by CT helps show when traits unique to each evolved. https://t.co/NJNTpI5nH9 #SciNews #FossilFriday

The chondrocranium of white #sharks is dwarfed by their enormous jaws. Here's what a human skull would look like with similarly proportioned jaws! #SharkWeek #sciart

Ornithischians breathed a bit like crocodiles, in that muscles originating on the pelvic girdle pulled on the thoracic peritoneum to generate negative pressure and draw in air (unlike us mammals, who use a diaphragm attached to the ribs to do the same). 🎨 from paper.

SMIL-ing through the pain? A specimen of the Triassic phytosaur #Smilosuchus shows evidence of extensive bone fractures and healing consistent with #osteomyelitis. In this diagram, all the indicated bones had some kind of fracture! #SciNews #FossilFriday

Cool thread on the #theropod #dinosaur Majungasaurus from Madagascar. Known from several good specimens, its ornamented skull caused some fragments to be mistaken for a pachycephalosaur.
L by @wildpast_studio R by @JCsotonyi #FossilFriday https://t.co/L4DWxUngW8

Want to know where your teeth come from? Sharks can't tell you; they're doing their own weird thing. Analysis in a phylogenetic context shows that their conveyor belt teeth are pretty specialized. 🎨 by @MesozoicMuse #FossilFriday #SciNews https://t.co/L0RCm5Wo9P