Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Primates Linnaeus, 1758 - primates
       Suborder Strepsirrhini Geoffroy Saint-Hilaire, 1812
         Infraorder Lemuriformes Gregory, 1915
           Superfamily Lemuroidea Gray, 1821
             Family Indriidae Burnett, 1828, orth. cons. - avahi, sifakas, and indri
               Genus Avahi Jourdan, 1834 - avahi, woolly lemur
                 1 Avahi laniger (Gmelin, 1788) - woolly lemur
                 2 Avahi occidentalis von Lorenz-Liburnau, 1898
                 3 Avahi unicolor Thalmann & Geissmann, 2000