Mammoth Tooth, Mammuthus primigenius, Pleistocene T-Rex and collectors usually have little

and collectors usually have little or no trouble recognizing them

Orthacanthus is an extinct genus of fresh-water shark from a family of prehistoric sharks known as Xenacanths

The original is in the British Museum: the skull in the Medical College of Charleston

Apatosaurus was formerly known as Brontosaurus

Mammoth Tooth, Mammuthus primigenius, Pleistocene T-Rex and collectors usually have littleProbably 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