The In Beceten Formation, also Beceten or Ibecten is a Coniacian to Santonian geologic formation in the Iullemmeden Basin of Niger. It has yielded a diverse fauna and some angiosperms.[1] Among others, it has yielded polypterifoms,[2] urodeles,[3] anurans,[4][5] and turtles.[6] Dinosaur remains are among the other fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[7] The lithology primarily consists of clays, fine limestones and sandy clays.[8][9]
| In Beceten Formation | |
|---|---|
| Stratigraphic range: Coniacian-Santonian | |
| Type | Geological formation |
| Underlies | Igdaman Group |
| Overlies | White Limestone Formation |
| Lithology | |
| Primary | Limestone, sandstone |
| Other | Shale |
| Location | |
| Coordinates | 15°06′N 6°00′E / 15.1°N 6.0°E |
| Approximate paleocoordinates | 1°42′N 0°54′E / 1.7°N 0.9°E |
| Region | Tahoua |
| Country |  Niger |
| Extent | Iullemmeden Basin |
  In Beceten Formation (Niger) | |
Fossil content
editThe following fossils have been reported from the formation:[10]
- Fish
- Reptiles
- Amphibians
- Flora
See also
editReferences
edit- ^ DE, BROIN; E, BUFFETAUT; JC, KOENIGUER; JC, RAGE; D, RUSSELL; P, TAQUET; C, VERGNAUD GRAZZINI; C, WENZ (1974). "LA FAUNE DE VERTEBRES CONTINENTAUX DU GISEMENT D'IN BECETEN (SENONIEN DU NIGER)". LA FAUNE DE VERTEBRES CONTINENTAUX DU GISEMENT D'IN BECETEN (SENONIEN DU NIGER). 279: 469–472.
- ^ GAYET, M; MEUNIER, F. J. (1996). "Nouveaux Polypteriformes du gisement coniacien-sénonien d'In Becetem (Niger)". Nouveaux Polypteriformes du gisement coniacien-sénonien d'In Becetem (Niger). 322 (8): 701–707. ISSN 1251-8050.
- ^ Gardner, James D.; Rage, Jean-Claude (1 March 2016). "The fossil record of lissamphibians from Africa, Madagascar, and the Arabian Plate". Palaeobiodiversity and Palaeoenvironments. 96 (1): 169–220. doi:10.1007/s12549-015-0221-0. ISSN 1867-1608.
- ^ Báez, A. M.; Rage, J.-C. (1998). "Pipid frogs from the upper cretaceous of in beceten, niger". Palaeontology. 41 (4): 669–691.
- ^ Lemierre, Alfred; Bailon, Salvador; Folie, Annelise; Laurin, Michel (January 2023). "A new pipid from the Cretaceous of Africa (In Becetèn, Niger) and early evolution of the Pipidae". Journal of Systematic Palaeontology. 21 (1). doi:10.1080/14772019.2023.2266428. ISSN 1477-2019.
- ^ De Lapparent De Broin, France; Broin, France De Lapparent De (2000). "African chelonians from the Jurassic to the present: phases of development and preliminary catalogue of the fossil record". Palaeontologia Africana. 36: 43–82. ISSN 0078-8554.
- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ Moody, R.T.J.; Sutcliffe, P.J.C. (April 1991). "The Cretaceous deposits of the Iullemmeden Basin of Niger, central West Africa". Cretaceous Research. 12 (2): 137–157. Bibcode:1991CrRes..12..137M. doi:10.1016/s0195-6671(05)80021-7. ISSN 0195-6671.
- ^ Meunier, Louise M V; Larsson, Hans C E (2017-10-26). "Trematochampsa taqueti as a nomen dubium and the crocodyliform diversity of the Upper Cretaceous In Beceten Formation of Niger". Zoological Journal of the Linnean Society. 182 (3): 659–680. doi:10.1093/zoolinnean/zlx061. ISSN 0024-4082.
- ^ In Beceten at Fossilworks.org
Bibliography
edit- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
Further reading
edit- F. de Broin, E. Buffetaut, J.-C. Koeniguer, J.-C. Rage, D. E. Russell, P. Taquet, C. Vergnaud-Grazzini and S. Wenz. 1974. La fauna de Vertébrés continentaux du gisement d'In Beceten (Sénonien du Niger) [The continental vertebrate fauna from the In Beceten locality (Senonian of Niger)]. Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences à Paris, série D 279:469-472