Mammalia - Carnivora - Otariidae

Alternative combinations: Arctocephalus (Hydrarctos) lomasiensis, Arctocephalus lomasiensis

Full reference: C. Muizon. 1978. Arctocephalus (Hydrarctos) lomasiensis, subgen. nov. et nov sp., un nouvel Otariidae du Mio-Pliocene de Sacaco. Bulletin de l'Institute Francais d'Etudes Andines 7(3-4):169-189

Belongs to Hydrarctos according to T. A. Demere et al. 2003

Sister taxa: none

Type specimen: Its type locality is Sacaco (SAO horizon), which is in a Messinian paralic siltstone in the Pisco Formation of Peru

Ecology: amphibious piscivore