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
             1 Family Lemuridae Gray, 1821 - large lemurs
             2 Family Lepilemuridae Gray, 1870
             3 Family Indriidae Burnett, 1828, orth. cons. - avahi, sifakas, and indri