Class [Mammalia] Linnaeus, 1758 - mammals
   Order Primates Linnaeus, 1758 - primates
     Suborder Prosimii Illiger, 1811 see Infraorder Strepsirrhini "Geoffroy Saint-Hilaire, 1812"
       Infraorder Lemuriformes Gregory, 1915
         Superfamily Lemuroidea Gray, 1821
           Family Indriidae Burnett, 1828, orth. cons. - avahi, sifakas, and indri
             Subfamily Indriinae Burnett, 1828, orth. cons. see Family Indriidae Burnett, 1828, orth. cons.
               1 Genus Avahi Jourdan, 1834 - avahi, woolly lemur
               2 Genus Indri Geoffroy Saint-Hilaire & Cuvier, 1796 - indri
               3 Genus Propithecus Bennett, 1832 - sifakas