Genus SPHENACANTHUS
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. / n.a. / ? n.a. / n.a. n.a. / Sphenacanthidae n.a. / Sphenacanthus
Age: Distribution:	Late Devonian - Late Permian South America, Europe
Depicted on: Guinea-Bissau, 2023 (M.S. margin)