Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Perissodactyla Owen, 1848 - odd-toed ungulates
       Family Tapiridae Gray, 1821 [monotypic] - tapirs
         Genus Tapirus Brisson, 1762 - tapirs
           1 Tapirus terrestris group
           2 Tapirus bairdii group [monotypic]
           3 Tapirus indicus group [monotypic]