There are no large beasts of prey, and neither the elephant, the rhinoceros nor the tapir is represented.
The tapir, fox, deer, wild cat, wild dog, carpincho or water hog and a few small rodents nearly complete the list of quadrupeds.
A similar but less developed process is found in the rhinoceros and tapir.
The typical Phenacodus primaevus, of the Lower or Wasatch Eocene of North America, was a relatively small ungulate, of slight build, with straight limbs each terminating in five complete toes, and walking in the digitigrade fashion of the modern tapir.
Tapir Group. the Tapiroidea the dentition may be either the full 44, or lack the first premolar in the lower or in both jaws.