Dukamaje_Formation
The Dukamaje Formation is a geological formation in Niger and Nigeria whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1] A wealth of Mosasaur fossils have also been recovered from this formation, particularly from the area around Mt. Igdaman.[2]
Quick Facts Type, Sub-units ...
| Dukamaje Formation | |
|---|---|
| Stratigraphic range: Maastrichtian[1] | |
| Type | Geological formation |
| Sub-units | Gypsiferous shale Member |
| Lithology | |
| Primary | Mudstone, shale |
| Other | Siltstone, marl, gypsum |
| Location | |
| Coordinates | 15.4°N 5.8°E / 15.4; 5.8 |
| Approximate paleocoordinates | 5.1°N 0.6°E / 5.1; 0.6 |
| Region | Tahoua Sokoto |
| Country |  Niger Nigeria |
| Extent | Iullemmeden Basin |
| Type section | |
| Named for | Dukamaje, Sokoto, Nigeria |
Close
More information Dinosaurs of the Dukamaje Formation, Taxa ...
| Dinosaurs of the Dukamaje Formation | ||||
|---|---|---|---|---|
| Taxa | Presence | Description | Images | |
|
Genus:
|
|
|||
Close
More information Mosasaurs of the Dukamaje Formation, Taxa ...
| Mosasaurs of the Dukamaje Formation | |||
|---|---|---|---|
| Taxa | Presence | Description | Images |
Genus:
|
|
Mid-sized globidensine mosasaur.[3] Originally described as a plioplatecarpine. Durophagous.[2] |
 |
Genus:
|
|
Large mosasaur of uncertain affiliations. High number of foramina on the snout and small eyes indicate a murky-water hunter.[4] | |
Genus:
|
|
Represented here by four vertebrae, one from a juvenile. Fragmentary state makes identification difficult.[2] | |
Genus:
|
|
Mid-sized mosasaur. Represented here by four vertebrae.[2] | |
Genus:
|
|
Mid-sized plioplatecarpine mosasaur. Represented here by several vertebrae.[2] | |
Genus:
|
|
Mid-sized plioplatecarpine mosasaur. Represented here by a single fragmentary vertebrae.[2] | |
Genus:
|
|
Massive mosasaurine mosasaur. Represented here by a fragmentary tooth crown. The first example of Mosasaurus from Niger and Nigeria.[2] | |
Close
- Other reptiles
- Fishes
- Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, Africa)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 604-605. ISBN 0-520-24209-2.
- Lingham-Soliar, Theagarten (1991). "Mosasaurs from the upper Cretaceous of Niger". Palaeontology. 34: 653–670.
- Lindgren, Johan (2005). "Dental and vertebral morphology of the enigmatic mosasaur Dollosaurus (Reptilia, Mosasauridae) from the lower Campanian (Upper Cretaceous) of southern Sweden". Bulletin of the Geological Society of Denmark. 52: 17–25. doi:10.37570/bgsd-2005-52-03.
- "Tongues, venom glands, and the changing face of Goronyosaurus". Tetrapod Zoology. Retrieved 2017-01-11.
- In Touhout (bed 4) at Fossilworks.org
- R. T. J. Moody and P. J. C. Suttcliffe. 1991. The Cretaceous deposits of the Iullemmeden Basin of Niger, central West Africa. Cretaceous Research 12:137-157