hyracotherium leporinum, Palaeotherium and a few other mammals are recorded.
In the Tapir (fig. 106, A) and hyracotherium the fifth digit is fully developed but is scarcely functional.
A small primitive horse that lived about 50 million years ago during the early Eocene Epoch. It had three or four hoofed toes on each foot and is considered by some to be the ancestor of modern horses. It is sometimes called the "dawn horse," a translation of its earlier scientific name, Eohippus.