Genus XENACANTHUS
Kingdom / Phylum . . . . . . . . Subphylum / Superclass . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Chordata Cephalochordata / Gnathostomata Chondrichthyes / Elasmobranchii / n.a. n.a. / Euselachii / Xenacanthiformes n.a. / n.a. n.a. / Xenacanthidae n.a. / Xenacanthus
Age: Distribution:	Early Permian - Triassic Northern America, Europe, India
Depicted on: Central African Republic, 2014 (position 2 of sheet, M.S. margin) Comoros, 1998 (position 5 of sheet 1) Djibouti, 2018 (M.S. margin) Gabon, 1995 (position 4 of sheet 2) Guinea-Bissau, 2021 (100 FCFA = position 1 of sheet) Guinea-Bissau, 2021 (M.S. margin) Kirgizia, 2012 (30 S., as Xenacanthidae) Nicaragua, 1999 (M.S. 2 margin) Sierra Leone, 2022 (position 1 of sheet, M.S. 2 margin)