Genus PETROLACOSAURUS
Kingdom / Phylum . . . . . . . . Subphylum / Superclass . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Chordata Cephalochordata / Gnathostomata Reptilia / Diapsida / n.a. n.a. / n.a. / Araeoscelida n.a. / n.a. n.a. / Petrolacosauridae n.a. / Petrolacosaurus
Age: Distribution:	Late Carboniferous North America
Depicted on: Mozambique, 2000 (position 7 of sheet 1)