Hyracotherium (Hyracotherium Owen, 1841)
Time period: Early Eocene in North America.
Size: 60 cm in length, 35 cm in height, 12 kg of weight
Typical representative: Hyracotherium leporinum Owen, 1841
Hyracotherium was a primative mammal, one of the first Horses, dating back to the early Eocene period. Measuring roughly one meter long, it was a herbivore which would have lived in small herds in the forests of ancient North America and Asia.