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°42′N 7°54′E / 16.7°N 7.9°E |
Approximate paleocoordinates | 8°18′N 2°36′E / 8.3°N 2.6°E |
Region | Agadez Region |
Country | ![]() |
Extent | Iullemmeden Basin |
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. [2] The dinosaur Spinophorosaurus is known from the formation. [3]
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]
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°42′N 7°54′E / 16.7°N 7.9°E |
Approximate paleocoordinates | 8°18′N 2°36′E / 8.3°N 2.6°E |
Region | Agadez Region |
Country | ![]() |
Extent | Iullemmeden Basin |
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. [2] The dinosaur Spinophorosaurus is known from the formation. [3]
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]