Genus CTENACANTHUS
Kingdom / Phylum . . . . . . . . Subphylum / Superclass . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . Superfamily / Family . . . . . . Subfamily / Genus . . . . . . . .	Animalia / Chordata Cephalochordata / Gnathostomata Chondrichthyes / Elasmobranchii / Euselachii n.a. / Euselachii / Ctenacanthiformes n.a. / n.a. n.a. / Ctenacanthidae n.a. / Ctenacanthus
Age: Distribution:	Devonian-Permian North America, South America
Depicted on: Guinea-Bissau, 2023 (position 1 of sheet)