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 Leptonychotes Gill, 1872 [monotypic] - Weddell seal Leptonychotes weddellii (Lesson, 1826) - Weddell seal