Noun
horses; asses; zebras; extinct animals
Source: WordNetThe evolutionary course of Equidae (wide family including all horses and related animals) is often viewed as a typical example of macroevolution again from the broad viewpoint after a notable accumulation of previously microevolutionary changes. Source: Internet
These early Equidae were fox-sized animals with three toes on the hind feet, and four on the front feet. Source: Internet