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 ‡Archaeolemurinae Forsyth Major, 1896 see Family Archaeolemuridae Forsyth Major, 1896
               1 Genus ‡Archaeolemur Filhol, 1895
               2 Genus ‡Hadropithecus Lorenz von Liburnau, 1899