pages matching 'dimetrodon'
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Spinosaurs were a family of bipedal carnivorous dinosaurs that lived in what is now North Africa approximately 100 million years ago. They were distinguished by the distinctive extended vertabrae spines ...
updated 2010-07-17 22:31:11
The Permian Dunkard Group (Pd) is an area of rock, Early Permian in age, in the south of Ohio, southwestern Pennsylvania, West Virginia and the hilltops of the Georges Creek ...