Irhazer Shale

Last updated
Irhazer Shale
Irhazer II Formation
Stratigraphic range: Bathonian, [1]
~167  Ma
Type Geological formation
Unit of Irhazer Group
Underlies Tiouraren Formation
Overlies Assaouas Formation
Lithology
Primary Shale, claystone
Other Siltstone, sandstone
Location
Coordinates 16°42′N7°54′E / 16.7°N 7.9°E / 16.7; 7.9
Approximate paleocoordinates 8°18′N2°36′E / 8.3°N 2.6°E / 8.3; 2.6
Region Agadez Region
CountryFlag of Niger.svg  Niger
Extent Iullemmeden Basin
Type section
Named forIrhazer Izane
Niger relief location map.jpg
Blue pog.svg
Irhazer Shale (Niger)

The Irhazer Shale (French : Argiles de l'Irhazer) 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. [2] The dinosaur Spinophorosaurus is known from the formation. [3]

Contents

Description

As the overlying Tiouraren Formation of the Irhazer Group, the formation previously had been assigned an Early Cretaceous age. [3] [4] [5]

Fossil content

The following fossils were reported from the formation: [3] [4] [5]

See also

Related Research Articles

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References

  1. Remes, K.; Ortega, F.; Fierro, I.; Ferrer, J.M.M.; Joger, U.; Kosma, R.; Ide, Oumarou Amadou; Maga, Abdoulaye; Ide, O. A.; Maga, A (2009). Farke, Andrew Allen (ed.). "A new basal sauropod dinosaur from the Middle Jurassic of Niger and the early evolution of sauropoda". PLOS ONE. 4 (9): e6924. Bibcode:2009PLoSO...4.6924R. doi: 10.1371/journal.pone.0006924 . PMC   2737122 . PMID   19756139.
  2. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  3. 1 2 3 North of Aderbissinat at Fossilworks.org
  4. 1 2 Ifayen Ignère at Fossilworks.org
  5. 1 2 In Gall at Fossilworks.org
  6. Serrano-Martínez, Alejandro; Vidal, Daniel; Sciscio, Lara; Ortega, Francisco; Knoll, Fabien (2015). "Isolated theropod teeth from the Middle Jurassic of Niger and the early dental evolution of Spinosauridae". Acta Palaeontologica Polonica. doi: 10.4202/app.00101.2014 . hdl: 10261/152148 .
  7. Hendrickx, Christophe; Mateus, Octávio; Araújo, Ricardo; Choiniere, Jonah (2019). "The distribution of dental features in non-avian theropod dinosaurs: Taxonomic potential, degree of homoplasy, and major evolutionary trends". Palaeontologia Electronica. doi: 10.26879/820 . hdl: 10362/98436 . ISSN   1935-3952.

Bibliography

Further reading