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Genus Uintatherium
- type genus of the Uintatheriidae; extinct large herbivorous ungulates somewhat resembling elephants; from the Eocene in Wyoming
Genus Procavia
- type genus of the Procaviidae
Genus Equus
- type genus of the Equidae: only surviving genus of the family Equidae
Genus Hyracotherium
- extinct horse genus; formerly called genus Eohippus
Genus Rhinoceros
- type genus of the Rhinocerotidae