Perchoerus, peccary skull Spinosaurus The original skull is in

The original skull is in the collections of the Denver Museum of Natural History and is specimen number 1663

and in an posterior part even higher and decreasing towards the caudal fin

Age: Early Cretacious

First discovered by anthropologist Mary Leakey in July 1959 at Olduvai Gorge

The gill plate cover is slightly larger in P

Perchoerus, peccary skull Spinosaurus The original skull is inPerchoerus is one of the rarest of the mammal fossils found in the White River Badlands and is much rarer than the cats and nimravids from the same area. They bear a strong resemblance to pigs, but pigs are from a separate family (the Suidae). They are the result of convergent evolution to pigs. During the convergent evolution, they occupied similar ecological niches and both were omnivorous rooters. The fossil record places peccaries in the Upper to