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'Hexaprotodon' is a genus of Hippopotamidae that is sometimes applied to the pygmy hippopotamus. Pygmy hippos may be classified as either ''Choeropsis liberiensis'' or ''Hexaprotodon liberiensis''.
The genus hexaprotodon also includes several species of rarely-studied extinct hippos from Asia, sometimes labeled "Asian Hippopotami."

★ ''Hexaprotodon palaeindicus'' - Indian Hippopotamus (fossil)

★ ''Hexaprotodon namadicus'' - Lesser Indian Hippopotamus (fossil) - possibly same as ''H. palaeindicus''

★ ''Hexaprotodon bruneti'' - Afar Hexaprotodon (fossil)

★ ''Hexaprotodon sivalensis'' - Sivalik Hippopotamus (fossil)

★ ''Hexaprotodon'' sp. - Myanmar Hippopotamus (fossil)

★ and some Indonesian species from the Pleistocene
The name Hexaprotodon means "six front teeth" as some of the fossil forms indeed have three pairs of incisors.