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
             1 Subfamily ‡Archaeolemurinae Forsyth Major, 1896 see Family Archaeolemuridae Forsyth Major, 1896
             2 Subfamily Indriinae Burnett, 1828, orth. cons. see Family Indriidae Burnett, 1828, orth. cons.
             3 Subfamily ‡Palaeopropithecinae Tattersall, 1973 see Family Palaeopropithecidae Tattersall, 1973