In Beceten Formation

Last updated
In Beceten Formation
Stratigraphic range: Coniacian-Santonian
Type Geological formation
Underlies Igdaman Group
OverliesWhite Limestone Formation
Lithology
Primary Limestone, sandstone
Other Shale
Location
Coordinates 15°06′N6°00′E / 15.1°N 6.0°E / 15.1; 6.0
Approximate paleocoordinates 1°42′N0°54′E / 1.7°N 0.9°E / 1.7; 0.9
Region Tahoua
CountryFlag of Niger.svg  Niger
Extent Iullemmeden Basin
Niger relief location map.jpg
Lightgreen pog.svg
In Beceten Formation (Niger)

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]

Contents

Fossil content

The following fossils have been reported from the formation: [10]

Fish
Reptiles
Amphibians
Flora

See also

Related Research Articles

<i>Rebbachisaurus</i> Extinct genus of dinosaurs

Rebbachisaurus is a genus of sauropod dinosaur of the superfamily Diplodocoidea, that lived during the Late Cretaceous period in Africa and possibly also South America about 99-97 million years ago. Remains attributed to Rebbachisaurus have been found in Morocco, Niger, Algeria, Tunisia and possibly also Argentina, although only the Moroccan remains can be referred to the genus without doubt. The discovery of Rayososaurus, a South American sauropod nearly identical to Rebbachisaurus which may have actually have been the same animal as Rebbachisaurus, supports the theory that there was still a land connection between Africa and South America during the Early Cretaceous, long after it was commonly thought the two continents had separated.

<span class="mw-page-title-main">Madtsoiidae</span> Extinct family of snakes

Madtsoiidae is an extinct family of mostly Gondwanan snakes with a fossil record extending from early Cenomanian to late Pleistocene strata located in South America, Africa, India, Australia and Southern Europe. Madtsoiidae include very primitive snakes, which like extant boas and pythons would likely dispatch their prey by constriction. Genera include some of the longest snakes known such as Vasuki, measuring at least 11–15 metres (36–49 ft) long, and the Australian Wonambi and Yurlunggur. As a grouping of basal forms the composition and even the validity of Madtsoiidae is in a state of flux as new pertinent finds are described, with more recent evidence suggesting that it is paraphyletic as previously defined.

Trematochampsa is a dubious extinct genus of crocodyliform from the Late Cretaceous In Beceten Formation of Niger.

The Grès supérieurs Formation is a geological formation in Laos whose strata date back to the Aptian to Albian stages of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. It is equivalent to the Khok Kruat Formation of Thailand.

The Continental intercalaire, sometimes referred to as the Continental intercalaire Formation, is a term applied to Cretaceous strata in Northern Africa. It is the largest single stratum found in Africa to date, being between 30 and 800 metres thick in some places. Fossils, including dinosaurs, have been recovered from this formation. The Continental intercalaire stretches from Algeria, Tunisia and Niger in the west to Egypt and Sudan in the east.

The Echkar Formation is a geological formation comprising sandstones and claystones in the Agadez Region of Niger, central Africa.

<span class="mw-page-title-main">Tiourarén Formation</span> Geological Formation

The Tiourarén Formation is a geological formation in the Agadez Region of Niger whose strata were originally thought to be Early Cretaceous. However, re-interpretation of the sediments showed that they are probably Middle or Late Jurassic (Bathonian-Oxfordian) in age. Other works suggested it reaches the Barremian. It is the uppermost unit of the Irhazer Group. Dinosaur remains & other vertebrates are among the fossils that have been recovered from the formation. Originally part of the "Argiles de l'Ihrazer", the Tiouaren Formation primarily comprises reddish to purple siltstones with occasional marls, limestones, and scarce channel sandstones.

The Farak Formation is a geological formation in Niger, central Africa.

The Dukamaje Formation is a geological formation in Niger and Nigeria whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. A wealth of Mosasaur fossils have also been recovered from this formation, particularly from the area around Mt. Igdaman.

<span class="mw-page-title-main">Elrhaz Formation</span>

The Elrhaz Formation is a geological formation in Niger, West Africa.

The Assaouas Formation, also referred to as the Assaouas Sandstone is a Late Jurassic geologic formation in Niger. Fossil sauropod tracks have been reported from the formation.

<span class="mw-page-title-main">Irhazer Shale</span>

The Irhazer Shale or Irhazer II Formation is a Middle Jurassic geologic formation of the Irhazer Group in the Agadez Region of Niger. Fossil ornithopod tracks have been reported from the formation. The dinosaur Spinophorosaurus is known from the formation.

<span class="mw-page-title-main">Iullemmeden Basin</span>

The Iullemmeden Basin is a major sub-Saharan inland basin in West Africa, extending about 1,000 kilometres (620 mi) north to south and 800 kilometres (500 mi) east to west. It covers western Niger and parts of Algeria, Mali and Nigeria. It is named after the Iullemmeden, a federation of Tuareg people who live in the central region of Niger. Its geographic range is largely coincident with the Azawagh region.

The Conglomérat de Cernay is a geologic formation in Champagne-Ardenne, northern France. It preserves fossils dating back to the Thanetian stage of the Paleocene period. The lizard Cernaycerta and placental mammal Bustylus cernaysi are named after the formation.

The Lignites de Soissonais is a geologic formation in the Var, Marne departments of France. It preserves fossils dating back to the Ypresian stage of the Eocene period.

The Argiles d'lignite du Soissonnais is a geologic formation in the Oise department of northern France. The formation has provided fossil mammals, reptiles and fish as well as arthropods in the amber of the formation. The Argiles d'lignite du Soissonnais dates back to the Ypresian stage of the Eocene period.

The Aïn el Guettar Formation is a geological formation in Tunisia, whose strata date back to the Late Aptian to Early Albian stages of the Cretaceous period. The lithology consists of coarse sandstones with occasional conglomerates and mudstones. Dinosaur remains are among the fossils that have been recovered from the formation.

The Silveirinha Formation is an Early Eocene geologic formation of the Mondego Basin in the Região Centro of central-western Portugal. The sandstones, siltstones and conglomerates were deposited in an alluvial environment.

The Sables du Castrais Formation, also known as the Molasses du Castrais, is a geologic formation of Eocene age, outcropping in the Montagne-Noire region of France.

References

  1. DE, BROIN; E, BUFFETAUT; JC, KOENIGUER; JC, RAGE; D, RUSSELL; P, TAQUET; C, VERGNAUD GRAZZINI; C, WENZ (1974). "LA FAUNE DE VERTEBRES CONTINENTAUX DU GISEMENT D'IN BECETEN (SENONIEN DU NIGER)". La Faune de Vertebres Continentaux du Gisement d'In Beceten (Senonien du Niger). 279: 469–472.
  2. GAYET, M; MEUNIER, F. J. (1996). "Nouveaux Polypteriformes du gisement coniacien-sénonien d'In Becetem (Niger)". Nouveaux Polypteriformes du gisement coniacien-sénonien d'In Becetem (Niger). 322 (8): 701–707. ISSN   1251-8050.
  3. Gardner, James D.; Rage, Jean-Claude (1 March 2016). "The fossil record of lissamphibians from Africa, Madagascar, and the Arabian Plate". Palaeobiodiversity and Palaeoenvironments. 96 (1): 169–220. Bibcode:2016PdPe...96..169G. doi:10.1007/s12549-015-0221-0. ISSN   1867-1608.
  4. Báez, A. M.; Rage, J.-C. (1998). "Pipid frogs from the upper cretaceous of in beceten, niger". Palaeontology. 41 (4): 669–691.
  5. Lemierre, Alfred; Bailon, Salvador; Folie, Annelise; Laurin, Michel (January 2023). "A new pipid from the Cretaceous of Africa (In Becetèn, Niger) and early evolution of the Pipidae". Journal of Systematic Palaeontology. 21 (1). Bibcode:2023JSPal..2166428L. doi:10.1080/14772019.2023.2266428. ISSN   1477-2019.
  6. De Lapparent De Broin, France; Broin, France De Lapparent De (2000). "African chelonians from the Jurassic to the present: phases of development and preliminary catalogue of the fossil record". Palaeontologia Africana. 36: 43–82. ISSN   0078-8554.
  7. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  8. 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. Bibcode:1991CrRes..12..137M. doi:10.1016/s0195-6671(05)80021-7. ISSN   0195-6671.
  9. 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. doi:10.1093/zoolinnean/zlx061. ISSN   0024-4082.
  10. In Beceten at Fossilworks.org

Bibliography

Further reading