In Beceten Formation

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	15.1°N 6.0°E / 15.1; 6.0
Approximate paleocoordinates	1.7°N 0.9°E / 1.7; 0.9
Region	Tahoua
Country	Niger
Extent	Iullemmeden Basin
In Beceten Formation (Niger)

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