In Beceten Formation Explained

In Beceten Formation
Type:	Geological formation
Age:	Coniacian-Santonian
Period:	Santonian
Prilithology:	Limestone, sandstone
Region:	Tahoua
Coordinates:	15.1°N 6°W
Paleocoordinates:	1.7°N 0.9°W
Underlies:	Igdaman Group
Overlies:	White Limestone Formation
Extent:	Iullemmeden Basin

The In Beceten Formation, also Beceten or Ibecten is a Coniacian to Santonian geologic formation in the Iullemmeden Basin of Niger. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.^[1] The lithology primarily consists of clays, fine limestones and sandy clays.^{[2] [3]}

Fossil content

The following fossils have been reported from the formation:^[4]

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. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
2. 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.
3. 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.
4. http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&collection_no=48867 In Beceten