Miohippus

Miohippus was a relative that lived beside its relative Mesohippus.

Morphology
This animal was bigger than Mesohippus and weighed maximum 32 kilograms. It was also 4 feet long and meant Miocene Horse in Greek.

More
Miohippus was one of the most successful horses of the Teritary period. This horse lived during the Eocene, not the Miocene.