Class [Mammalia] Linnaeus, 1758 - mammals Order Pinnipedia Illiger, 1811 - seals, sea lions, and walrus see Parvorder Pinnipedia Illiger, 1811 Family Phocidae Gray, 1821 - true seals Genus Mirounga Gray, 1827 - elephant-seals 1 Mirounga angustirostris (Gill, 1866) - northern elephant seal 2 Mirounga leonina (Linnaeus, 1758) - southern elephant seal