Class [Mammalia] Linnaeus, 1758 - mammals Order Primates Linnaeus, 1758 - primates Family Lemuridae Gray, 1821 - large lemurs Genus Petterus Groves & Eaglen, 1988 - brown lemur see Genus Eulemur Simons & Rumpler, 1988 Petterus rubriventer (I. Geoffroy Saint-Hilaire, 1850) - red-bellied lemur see Eulemur rubriventer (I. Geoffroy Saint-Hilaire, 1850)