Wikipedia
Ulemosaurus
Ulemosaurus svijagensis was a dinocephalian synapsid that lived 265 to 260 million years ago, at Isheevo in Russian Tatarstan. It was a tapinocephalid, a group of bulky herbivores which flourished in the Middle Permian. Ulemosaurus'' and other tapinocephalians disappeared at the end of the Mid- Permian.