Class Mammalia Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Indridae Burnett, 1828 - avahi, sifakas, and indri see Family Indriidae Burnett, 1828, orth. cons. Genus Propithecus Bennett, 1832 - sifakas Propithecus verreauxi A. Grandidier, 1867 - Verreaux's sifaka