Irhazer Shale

Irhazer Shale
Irhazer II Formation
Stratigraphic range: Middle Jurassic
Type Geological formation
Unit of Irhazer Group
Underlies Tiouraren Formation
Overlies Assaouas Formation
Lithology
Primary Shale, claystone
Other Siltstone, sandstone
Location
Coordinates 16°42′N 7°54′E / 16.7°N 7.9°E / 16.7; 7.9Coordinates: 16°42′N 7°54′E / 16.7°N 7.9°E / 16.7; 7.9
Approximate paleocoordinates 8°18′N 2°36′E / 8.3°N 2.6°E / 8.3; 2.6
Region Agadez Region
Country  Niger
Type section
Named for Irhazer Izane

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.[1] The dinosaur Spinophorosaurus is known from the formation.[2]

Description

As the overlying Tiouarèn Formation of the Irhazer Group, the formation previously had been assigned an Early Cretaceous age.[2][3][4]

Fossil content

The following fossils were reported from the formation:[2][3][4]

See also

References

  1. ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  2. 1 2 3 North of Aderbissinat at Fossilworks.org
  3. 1 2 Ifayen Ignère at Fossilworks.org
  4. 1 2 In Gall at Fossilworks.org

Bibliography

  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp.  ISBN 0-520-24209-2.

Further reading

  • A. F. d. Lapparent. 1960. Les Dinosauriens du "Continental intercalaire" du Saharal central [The dinosaurs of the "Continental Intercalaire" of the central Sahara]. Mémoires de la Société géologique de France, nouvelle série 39(88A):1-57
  • K. Remes, F. Ortega, I. Fierro, U. Joger, R. Kosma, J. M. M. Ferrer, Project, Niger Project, O. A. Ide and A. Maga. 2009. A new basal sauropod dinosaur from the Middle Jurassic of Niger and the early evolution of Sauropoda. PLoS One 4(9):e6924:1-13
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