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From Wikipedia, the free encyclopedia
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]
Irhazer Shale Irhazer II Formation | |
---|---|
Stratigraphic range: Bathonian,[1] ~ Middle Jurassic | |
Type | Geological formation |
Unit of | Irhazer Group |
Underlies | Tiouraren Formation |
Overlies | Assaouas Formation |
Lithology | |
Primary | Shale, claystone |
Other | Siltstone, sandstone |
Location | |
Coordinates | 16.7°N 7.9°E |
Approximate paleocoordinates | 8.3°N 2.6°E |
Region | Agadez Region |
Country | Niger |
Extent | Iullemmeden Basin |
Type section | |
Named for | Irhazer Izane |
As the overlying Tiouraren Formation of the Irhazer Group, the formation previously had been assigned an Early Cretaceous age.[3][4][5]
The following fossils were reported from the formation:[3][4][5]
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