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dating to about 153 million years ago during the Jurassic Period
Germany is one of the richest sites for understanding the living environment of the Eocene at about 49 million years ago
Pennsylvanian non-marine rocks have yielded occasional footprints and trackways of amphibians
The first plesiosaur skeletons were found in England by Mary Anning
000–780
Tyrannosaurus rex Tooth, small Pachycephalosaurus dating to about 153 millionDespite this tooth's small size, it clearly shows the flesh tearing ability of T. rex teeth. Robust and slightly curved for maximum bone crushing, muscle searing power. And look a little closer and you'll see small serrations, tiny ridges on the edge of the tooth for extra cutting ability. This tooth is a great reproduction at a super price! Click the image for a closer look. Specs: Tyrannosaurus rex. Late Cretaceous (70 m. y. a.). North America. Also
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