Irbzer Formation
| Irbzer Formation | |
|---|---|
| Stratigraphic range: Maastrichtian-Paleocene ~ | |
| Type | Geological formation |
| Area | Fes-Boulmane |
| Lithology | |
| Primary | Gray mudstone |
| Location | |
| Coordinates | 33°1′N 4°8′W / 33.017°N 4.133°W |
| Approximate paleocoordinates | 24°5′N 5°2′W / 24.083°N 5.033°W |
| Region | Fes-Boulmane |
| Country | Morocco |
The Irbzer Formation is a geological formation located in Morocco in the area of Fes-Boulmane of latest Cretaceous (Maastrichtian) to Paleocene age. The lower section of this formation consists of yellowish, cross-bedded calcareous sandstone containing shark teeth, while the layer above comprises phosphatic marls with vertebrate bone beds, including dinosaur remains.