Mammalia - Rodentia - Hydrochoeridae

Alternative spelling: Protohydrochoeridae

Parent taxon: Hydrochoeridae according to J. L. Prado et al. 1998

See also Rusconi 1934

Sister taxa: Anatochoerinae, Anatochoerus, Cantracavia, Cardiatheriinae, Cardiatherium, Contracavia, Phugatherium

Subtaxa: Nothydrochoerus

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Ecology: amphibious grazer

Distribution: found only at Aroyo Morales (Pliocene of Argentina)

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