Dimetrodon Skeleton, juvenile Alamosaurus and a cultural increase in

and a cultural increase in environmental concerns

and thick noses

but belong to relatively small Protoanisopterans and Zygopterans (damselflies)

Desmostylus was a large

dome-shaped body armor

Dimetrodon Skeleton, juvenile Alamosaurus and a cultural increase inJuvenile Dimetrodon Skeleton, Permian Of North America Dimetrodon (meaning two measure teeth) was a sail backed, meat eating animal that lived during the Permian Period, roughly 280 MYA years ago, before the dinosaurs evolved. It was a so called mammal like reptile, a pelycosaur; pelycosaurs were the ancestors of the mammals. Dimetrodon was a dominant carnivore during the Permian period, living mainly in swampy areas. Unlike their fellow non finned