Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Carnivora Bowdich, 1821 - carnivores Suborder Caniformia Kretzoi, 1943 Family Phocidae Gray, 1821 - true seals Genus Hydrurga Gistel, 1848 [monotypic] - leopard seal 1 Hydrurga leptonyx (Blainville, 1820) - leopard seal