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DISCOVERY OF FOSSILS
roughly 280 million years ago
The multituberculates had a cranial and dental anatomy superficially similar to rodents such as mice and rats
Wellnhofer in 1974
USA Formation: Morrison Age: Jurassic
Mammoth Tooth, Mammuthus primigenius, Pleistocene Spinosaurus DISCOVERY OF FOSSILSProbably the most unique aspect of the Woolly Mammoth is not its large size, shaggy coat, or giant tusks, but its teeth. The Mammoth only had a single tooth in each jaw "four total" with six sets of replacements over its lifetime. If and when the last set wore out, the animal starved to death. Species: Mammuthus primigenius Tooth is 8 inches across the surface and 3. 5 inches wide with an 8 inch long root. Shipping Included