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 Mirounga leonina (Linnaeus, 1758) - southern elephant seal