Class [Mammalia] Linnaeus, 1758 - mammals
   Order Carnivora Bowdich, 1821 - carnivores
     Family Ursidae Batsch, 1788 - bears
       1 Genus Tremarctos Gervais, 1855 - spectacled bear
       2 Genus Selenarctos Heude, 1901 see Subgenus Euarctos (Gray, 1864)
       3 Genus Ursus Linnaeus, 1758 - black, brown, polar, sun, and sloth bears
       4 Genus Thalarctos Gray, 1825 - polar bear see Genus Ursus Linnaeus, 1758
       5 Genus Helarctos Horsfield, 1825 - Malayan sun bear
       6 Genus Melursus Meyer, 1793 - sloth bear
       7 Genus Ailuropoda Milne-Edwards, 1870 - giant panda