Dimetrodon, track Iguanodon was named and shortly described

was named and shortly described by Jack Horner and David B

Chasmosaur humerus

(Homo habilis) Skull

Ichthyostega (Greek: "fish roof") is an early genus of tetrapodomorphs that lived at the end of the Late Devonian Period

Faunas of West Virginia in the Pleistocene (Ice Age)

Dimetrodon, track Iguanodon was named and shortly describedDimetrodon track 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 pelycosaurs, they warmed up early after