The In Beceten Formation, also Beceten or Ibecten is a

Coniacian The Coniacian is an age or stage in the geologic timescale. It is a subdivision of the Late Cretaceous Epoch or Upper Cretaceous Series and spans the time between 89.8 ± 1 Ma and 86.3 ± 0.7 Ma (million years ago). The Coniacian is preceded b ...

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 secondary ...

in the

Iullemmeden Basin The Iullemmeden Basin (Berber language: Iwellemmedden) is a major sub-Saharan inland basin in West Africa, extending about north to south and east to west. It covers western Niger and parts of Algeria, Mali and Nigeria. It is named after the Iu ...

Niger ) , official_languages = , languages_type = National languagesDinosaur 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 ...

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 n ...

.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 Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was cre ...

.org ;Fish: * '' Amia sp.'' * '' Stromerichthys sp.'' * Lepisosteidae indet. ;Reptiles * ''

Erymnochelys madagascariensis The Madagascan big-headed turtle (''Erymnochelys madagascariensis'') is a turtle native to the waters of permanent slow moving rivers and lakes in western Madagascar. These turtles are critically endangered and have been evaluated to be the ...

'' * '' 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 The dicotyledons, also known as dicots (or, more rarely, dicotyls), are one of the two groups into which all the flowering plants (angiosperms) were formerly divided. The name refers to one of the typical characteristics of the group: namely, t ...

References

Bibliography

* {{ISBN, 0-520-24209-2

Fossil content

See also

References

Bibliography

Further reading