This group becomes the Perissodactyla ("odd-toed" Ungulates) of the zoologist, throwing out side-branches in the tapir and the rhinoceros, and culminating in the one-toed horse.
1
The tapir makes a footprint much like that of a small rhinoceros, being one of the odd-toedungulates.
2
More than 200 species of mammal are distinguished by possession of hooves, known as ungulates, and are divided into two orders, even-toed and odd-toedungulates.