Chenini Member

Last updated
Chenini Member
Stratigraphic range: Late Aptian-Early Albian
~115–109  Ma
Type Member
Unit of Aïn el Guettar Formation
Underlies Oum ed Diab Member
Overlies Douiret Formation
Lithology
Primary Sandstone
Other Conglomerate, mudstone
Location
Location Sahara Desert
Coordinates 33°12′N10°18′E / 33.2°N 10.3°E / 33.2; 10.3
Approximate paleocoordinates 15°54′N10°18′E / 15.9°N 10.3°E / 15.9; 10.3
Region Tataouine
CountryFlag of Tunisia.svg  Tunisia
Type section
Named for Chenini
Tunisian Republic location map Topographic.png
Green pog.svg
Chenini Member (Tunisia)

The Chenini Member is a geological member of the Ain el Guettar Formation in Tunisia, whose strata date back to the Late Aptian to Early Albian stages of the Cretaceous period. [1] [2] The lithology consists of coarse sandstones with occasional conglomerates and mudstones. [3] Dinosaur remains are among the fossils that have been recovered from the formation. [4]

Contents

Vertebrate paleofauna

The Chenini Member during the Early Cretaceous period was a marsh-like habitat with swamps and plenty of water. The most famous dinosaur discoveries made here include Carcharodontosaurus and Spinosaurus.

See also

Related Research Articles

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Spinosaurus is a genus of spinosaurid dinosaur that lived in what now is North Africa during the Cenomanian stage of the Late Cretaceous period, about 100 to 94 million years ago. The genus was known first from Egyptian remains discovered in 1912 and described by German palaeontologist Ernst Stromer in 1915. The original remains were destroyed in World War II, but additional material came to light in the early 21st century. It is unclear whether one or two species are represented in the fossils reported in the scientific literature. The best known species is S. aegyptiacus from Egypt, although a potential second species, S. maroccanus, has been recovered from Morocco. The contemporary spinosaurid genus Sigilmassasaurus has also been synonymized by some authors with S. aegyptiacus, though other researchers propose it to be a distinct taxon. Another possible junior synonym is Oxalaia from the Alcântara Formation in Brazil.

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References

  1. Bateun el Hmaima at Fossilworks.org
  2. Bir Miteur, RH 45 at Fossilworks.org
  3. Benton, Michael J.; Bouaziz, Samir; Buffetaut, Eric; Martill, David; Ouaja, Mohamed; Soussi, Mohamed; Trueman, Clive (April 2000). "Dinosaurs and other fossil vertebrates from fluvial deposits in the Lower Cretaceous of southern Tunisia" (PDF). Palaeogeography, Palaeoclimatology, Palaeoecology. 157 (3–4): 227–246. Bibcode:2000PPP...157..227B. doi:10.1016/s0031-0182(99)00167-4. ISSN   0031-0182.
  4. 1 2 3 4 Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Africa)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 571-573. ISBN   0-520-24209-2.
  5. Buffetaut, E & Ouaja, M (2002) A new specimen of Spinosaurus (Dinosauria, Theropoda) from the Lower Cretaceous of Tunisia, with remarks on the evolutionary history of the Spinosauridae. Bulletin de la Société Géologique de France173: 415–421. doi : 10.2113/173.5.415
  6. BENTON, M. J., BOUAZIZ, S., BUFFETAUT, E., MARTILL, D. M., OUAJA, M., SOUSSI, M. & TRUEMAN, C. (2000): Dinosaurs and other fossil vertebrates from fluvial deposits in the Lower Cretaceous of southern Tunisia. Palaeogeography, Palaeoclimatology, Palaeoecology, 157: 227–246.

Further reading