The In Beceten Formation, also Beceten or Ibecten is a
Coniacian to
Santonian
The Santonian is an age in the geologic timescale or a chronostratigraphic stage. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series. It spans the time between 86.3 ± 0.7 mya (million years ago) and 83.6 ± 0.7 mya. ...
geologic
formation
Formation may refer to:
Linguistics
* Back-formation, the process of creating a new lexeme by removing or affixes
* Word formation, the creation of a new word by adding affixes
Mathematics and science
* Cave formation or speleothem, a secondar ...
in the
Iullemmeden Basin of
Niger
)
, official_languages =
, languages_type = National languages[Dinosaur
Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is t ...](_blank)
remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
.
[Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.] The lithology primarily consists of clays, fine limestones and sandy clays.
Fossil content
The following fossils have been reported from the formation:
In Beceten
at Fossilworks.org
;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
This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented.
Containing body fossils
* List of stratigraphic units with dinosaur body fossils
** List of stratigraphic units with ...
** List of stratigraphic units with indeterminate dinosaur fossils
This list of stratigraphic units with indeterminate dinosaur fossils includes stratigraphic units of formation rank or higher that have produced dinosaur body fossils, although none of these remains have been referred to a specific genus in the sci ...
* Lists of fossiliferous stratigraphic units in Africa
These lists of fossiliferous stratigraphic units in Africa enumerate the rock layers which preserve the fossilized remains of ancient life in Africa by the modern countries wherein they are found.
Geographical atlas
C ...
** List of fossiliferous stratigraphic units in Niger
* Geology of Niger
References
Bibliography
* {{ISBN, 0-520-24209-2
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) he 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
Geologic formations of Niger
Upper Cretaceous Series of Africa
Cretaceous Niger
Coniacian Stage
Santonian Stage
Shale formations
Limestone formations
Sandstone formations
Fluvial deposits
Lacustrine deposits
Paleontology in Niger
Formations