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 Halichoerus Nilsson, 1820 [monotypic] - gray seal Halichoerus grypus (Fabricius, 1791) - gray seal [Halichoerus grypus grypus] (Fabricius, 1791)