Dimetrodon Skeleton, juvenile Alamosaurus This work would not be

This work would not be possible without the kind help provided by many of the field�s best known paleontologists

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the shale and the fossils become very unstable and they turn to powder

Unlike most modern birds Confuciusornis retained clawed fingers on its wings

Dimetrodon Skeleton, juvenile Alamosaurus This work would not beJuvenile 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