''Ceratotherium'' (Greek: "horn" (keratos), "beast" (therion)) is a genus of the family Rhinocerotidae, consisting of a single extant species, the white rhinoceros, and its extinct relatives, ''Ceratotherium neumayri'' and ''Ceratotherium mauritanicum'', of which ''Ceratotherium efficax'' is considered a synonym. Another species known as ''Ceratotherium praecox'' is now considered a member of the related ''

Diceros ''Diceros'' (Greek: "two" (dio), "horn" (keratos)) is a genus of rhinoceros containing the living black rhinoceros ''(Diceros bicornis)'' and at least one extinct species. Taxonomy ''Diceros'' is generally believed to have branched off from an ...

''.

References

Mammal genera with one living species Taxa named by John Edward Gray Rhinoceroses Mammal genera Extant Tortonian first appearances {{oddtoedungulate-stub