Hyrocotherium: It
was the oldest ancestor of all of the horses and was only ten inches tall.
Mesohippus: It was
larger than Hyrocotherium, and this time, it had three toes on each foot,
instead of four.
Meruchippus: The earth
changed and so did the horse to avoid early extinction.
Pliohippus: It had
large flat teeth, and long, strong legs.
Equus Caballus: It is today's modern horse. It is big, strong, and fast. It adapts to any weather conditions.
