In Beceten Formation Explained

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]}

Fossil content

The following fossils have been reported from the formation:^[10]

Fish:

• Amia sp.
• Stromerichthys sp.
• Lepisosteidae indet.

Reptiles

• Erymnochelys madagascariensis
• Madtsoia aff. madagascariensis
• Trematochampsa taqueti
• Libycosuchus sp.
• Carnosauria indet.
• Goniopholididae indet.
• Lacertilia indet.
• Pelomedusidae indet.
• Serpentes indet.
• Titanosaurinae indet.

Amphibians

• Pachycentrata taqueti
• Ceratodus sp.
• Protopterus sp.
• Ranidae indet.
• Urodela indet.

Flora

• Dicotyledonae

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with indeterminate dinosaur fossils
• Lists of fossiliferous stratigraphic units in Africa
  • List of fossiliferous stratigraphic units in Niger
• Geology of Niger

References

Bibliography

Further reading

• 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

Notes and References

1. DE . BROIN . E . BUFFETAUT . JC . KOENIGUER . JC . RAGE . D . RUSSELL . P . TAQUET . C . VERGNAUD GRAZZINI . C . WENZ . 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). . 1974 . 279 . 469–472 .
2. GAYET . M . MEUNIER . F. J. . Nouveaux Polypteriformes du gisement coniacien-sénonien d'In Becetem (Niger) . Nouveaux Polypteriformes du gisement coniacien-sénonien d'In Becetem (Niger) . 1996 . 322 . 8 . 701–707 . 1251-8050.
3. Gardner . James D. . Rage . Jean-Claude . The fossil record of lissamphibians from Africa, Madagascar, and the Arabian Plate . Palaeobiodiversity and Palaeoenvironments . 1 March 2016 . 96 . 1 . 169–220 . 10.1007/s12549-015-0221-0 . 2016PdPe...96..169G . en . 1867-1608.
4. Báez . A. M. . Rage . J.-C. . Pipid frogs from the upper cretaceous of in beceten, niger . Palaeontology . 1998 . 41 . 4 . 669–691 .
5. Lemierre . Alfred . Bailon . Salvador . Folie . Annelise . Laurin . Michel . A new pipid from the Cretaceous of Africa (In Becetèn, Niger) and early evolution of the Pipidae . Journal of Systematic Palaeontology . January 2023 . 21 . 1 . 10.1080/14772019.2023.2266428 . 2023JSPal..2166428L . en . 1477-2019.
6. De Lapparent De Broin . France . Broin . France De Lapparent De . African chelonians from the Jurassic to the present: phases of development and preliminary catalogue of the fossil record . Palaeontologia Africana . 2000 . 36 . 43–82 . 0078-8554.
7. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
8. 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. 10.1016/s0195-6671(05)80021-7. 1991CrRes..12..137M . 0195-6671.
9. 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. 10.1093/zoolinnean/zlx061. 0024-4082.
10. https://paleobiodb.org/classic/displayCollResults?collection_no=48867 In Beceten