purplecat

Chasmosaurus is a dinosaur from the late Cretaceous, related to Triceratops. Image stolen from the Great Dinosaur Discoveries by Darren Naish.

Image stolen shamelessly from The Great Dinosaur Discoveries by Darren Nash.


Dracorex is a Pachycephalosaur from the late Cretaceous. The spectacular skull was first described 2006.

Image stolen shamelessly from the DK Encyclopaedia of Dinosaurs and Pre-historic Life


Rhamphorhynchus is an extinct genus of long-tailed pterosaurs from the Jurassic.

Barnum Brown was an American palaeontologist who discovered the first Tyrannosaurus remains, though I don't think the above shows a T. rex bone.

Stethacanthus was a genus of shark-like holocephalian (no, I don't know what one of those is). It has a kind of spine-brush thing on its head which you can see in the fossil once you know you are looking for it - top right.

Crossposted to primeval_denial



Artist's impression of an Anteosaurus


The Anteosaurus is a large carnivorous Therapsid from the middle Permian in South Africa. Therapsids (a kind of synapsid which is the family to which mammals belong) were hugely successful in the middle Permian and were among the largest animals of their time. Anteosaurus were comparable in size to Polar Bears and an early example of a really large terrestial predator.

Anteosaurs had large incisors and canines but only small teeth behind the canines. Although big, they had short limbs, so they probably weren't that fast and may have been semi-acquatic, lurking in water, like crocodiles to grab their prey. They have thickened skulls, suggested as an adaptation for head-butting.





Anteosaurus (Prehistoric Wildlife)
Anteosaurus (Synapsid Notebook)
Know Your Family (Synapsid Notebook)
Anteosaur (Wikipedia)