Genus CHASMOSAURUS
Kingdom / Phylum . . . . . . . . Subphylum / Superclass . . . . Class / Subclass . . . . . . . . . . Infraclass / Division. . . . . . . . Subdivision / Infradivision . . . Superorder / Order. . . . . . . . Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Chordata Cephalochordata / Gnathostomata Reptilia / Diapsida Archosauromorpha / Archosauria Avemetatarsalia / Ornithodira Dinosauria / Ornithischia Ceratopsia / n.a. n.a. / Ceratopsidae Chasmosaurinae / Chasmosaurus
Age: Distribution:	Late Cretaceous North America
Depicted on: Canada, 2015 (position 2 and stamp booklet) Central African Republic, 2002 (position 2 of sheet 1) Chad, 2020 (position 3 of sheet) Djibouti, 2016 (position 4 of sheet) Equatorial Guinea, 1994 (300 Fr.) Guinea, 2021 (M.S.) Guinea-Bissau, 2021 (M.S. 1 margin) Korea (North), 2011 (140 W., also in stamp booklet) Lesotho, 1998 (position 7 of sheet 2) Liberia, 1999 (70 c., misnamed Pentaceratops) Liberia, 1999 (position 6 of sheet) Maldives, 1994 (5 R.) Maldives, 2017 (M.S.) Mongolia, 1990 (20 c.) Nicaragua, 1994 (position 8 of sheet) Niger, 2021 (position 3 of sheet) Saint Vincent & the Grenadines, 1994 (position 2 of sheet 2) Sao Tome e Principe, 2003 (position 4 of sheet) Sierra Leone, 2022 (position 1 of sheet) Solomon Islands, 2016 (position 5 of sheet) Solomon Islands, 2017 (position 4 of sheet) Turks and Caicos Islands, 1993 (head on M.S. 1 margin)   Post card, North Korea, 2011, Aerogramme, North Korea, 2011.