Class [Mammalia] Linnaeus, 1758 - mammals Order Carnivora Bowdich, 1821 - carnivores Family Ursidae Batsch, 1788 - bears Genus Thalarctos Gray, 1825 - polar bear see Genus Ursus Linnaeus, 1758 Thalarctos maritimus (Phipps, 1774) - polar bear see Ursus maritimus Phipps, 1774