The Upper Eocene rocks of Egypt have also yielded primeval types of the Proboscidea and other mammalia.

Monkeys, as a whole, form a very isolated group, having no near relations to any other mammalia.

Indeed, in mental respects, the chimpanzee surpasses all of the other mammalia, with the sole exception of man.

The embryos of wildcats and dogs, rabbits and rats, pigs, deer, and sheep, and of all other mammalia, possess similar structures.

From the same beds, and in marls alternating with the sands, remains of the elephant, rhinoceros, and other mammalia have been exhumed.

Beneath the gravel containing these large erratics, is a blue mud in which skeletons of Elephas antiquus, and other mammalia, have been observed.