In Beceten Formation

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. The lithology primarily consists of clays, fine limestones and sandy clays.

Fossil content
The following fossils have been reported from the formation:
 * 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