Genus ACANTHOSTEGA
Kingdom / Phylum . . . . . . . . Subphylum / Superclass . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Chordata Cephalochordata / Gnathostomata Amphibia / Labyrinthodontia / n.a. n.a. / n.a. / Ichthyostegalia n.a. / n.a. n.a. / Acanthostegidae n.a. / Acanthostega
Age: Distribution:	Late Devonian Greenland
Depicted on: Chad, 2022 (M.S. margin) Gabon, 2000 (500 Fr. and position 3 of sheet 2) Guinea-Bissau, 2022 (position 1 of sheet) Liberia, 1999 (position 7 of sheet 1, but Ichthyostega shown)