These fossilized remains have provided invaluable information about the anatomy and behavior of this impressive marine reptile from the past

about 15 million years ago

with an estimated length of around 1

Triceratops could have reached 30 feet in length and weighed about 10

Dimetrodon Variant:Primed These fossilized remains have providedDimetrodon (D. grandis, "Wedge toothed"), is an extinct genus of non mammalian synapsids that lived during the Lower Permian Kungurian Age, between 295 and 272 million years ago, was a terrestrial animal and is believed to have inhabited in swampy areas and riverbanks, near bodies of fresh water where it could find food. It is a member of the Sphenacodontidae family and is the best known of the Pelycosaurs, especially for its spectacular sail. It