Class [Mammalia] Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Indriidae Burnett, 1828, orth. cons. - avahi, sifakas, and indri Genus Propithecus Bennett, 1832 - sifakas Propithecus diadema Bennett, 1832 - diadem sifaka