Genus HESPERORNIS
Kingdom / Phylum . . . . . . . . Subphylum / Superclass . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Chordata Cephalochordata / Gnathostomata Aves / Neornithes / n.a. n.a. / Odontognathae / Hesperornithiformes n.a. / n.a. n.a. / Hesperornithidae n.a. / Hesperornis
Age: Distribution:	Late Cretaceous North America
Depicted on: Central African Republic, 2022 (positions 1 and 4 of sheet, M.S. 1 label) Central African Republic, 2023 (sheet margin) Central African Republic, 2024 (position 2 of sheet) Djibouti, 2023 (M.S. 1 margin) Gambia, 1999 (position 5 of sheet 1) Guinea, 2022 (M.S. margin) Guinea-Bissau, 2021 (M.S. 1 margin) Laos, 1994 (10 K.) Liberia, 2022 (M.S. margin) Niger, 2021 (M.S., M.S. margin) Niger, 2023 (position 5 of sheet) Saint Vincent & the Grenadines, 1994 (position 1 of sheet 1) Saint Vincent & the Grenadines, 1999 (position 12 of sheet 2) Sierra Leone, 1992 (position 13 of sheet and M.S.) Sierra Leone, 2022 (position 4 of sheet) Togo, 2022 (M.S. 1, sheet margin)