Genus MESOSAURUS
Kingdom / Phylum . . . . . . . . Subphylum / Superclass . . . . Class / Subclass / Infraclass Division / Superorder / Order Suborder / Infraorder . . . . . . Superfamily / Family . . . . . . . Subfamily / Genus . . . . . . . . .	Animalia / Chordata Cephalochordata / Gnathostomata Reptilia / Anapsida / n.a. n.a. / n.a. / Mesosauria n.a. / n.a. n.a. / Mesosauridae n.a. / Mesosaurus
Age: Distribution:	Early Permian South America, Southern Africa
Depicted on: Afghanistan, 1988 (3 A.) Bulgaria, 2003 (0,49 L. and in stamp booklet) Central African Republic, 2016 (M.S.) Central African Republic, 2022 (label at top right) Comoros, 1998 (position 8 of sheet 1) Comoros, 1999 (M.S. 2) Djibouti, 2022 (M.S.) Djibouti, 2023 (M.S. margin) Guinea, 1999 (position 7 of sheet 2) Guinea, 2009 (position 7 of sheet 2, overprinted) Guinea-Bissau, 1989 (200 P.) Guinea-Bissau, 2021 (position 1 of sheet) Guyana, 1996 (position 6 of sheet 3) Guyana, 1998 (position 6 of sheet 2) Liberia, 2024 (M.S. 3 margin) Maldives, 2017 (position 1 of sheet) Maldives, 2019 (position 3 of sheet) Mozambique, 2018 (position 3 of sheet) Nicaragua, 1999 (position 2 of sheet 2, misnamed Coelurus) Niger, 2000 (position 3 of sheet 5) Niger, 2021 (M.S.) Poland, 1965 (60 g. and F.D.C. cover) Saint Kitts, 1994 (1,20 $., also with overprinted logo) Saint Vincent & the Grenadines, 1994 (position 2 of sheet 1) Sierra Leone, 2016 (M.S. margin) Somalia, 2000 (500 S.) Turks and Caicos Islands, 1991 (M.S. 1) Uruguay, 1997 (5 $.) Uzbekistan, 1999 (position 2 of sheet)