hyracotherium
/ˌhaɪrəkəʊˈθɪərɪəm/noun
1- the earliest fossil ancestor of the horse, which was a small forest animal of the Eocene epoch, with four toes on the front feet and three on the back始行马。
1.1
- Genus Hyracotherium, family Equidae.始行马属, 马科。
词源
modern Latin: from hyraco- （combining form from HYRAX） + Greek thērion 'wild animal'.