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°24′N 5°48′E / 15.4°N 5.8°E |
Approximate paleocoordinates | 5°06′N 0°36′E / 5.1°N 0.6°E |
Region |
Tahoua Sokoto |
Country |
Niger Nigeria |
Extent | Iullemmeden Basin |
Type section | |
Named for | Dukamaje, Sokoto, Nigeria |
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]
Dinosaurs of the Dukamaje Formation | ||||
---|---|---|---|---|
Taxa | Presence | Description | Images | |
Genus:
|
|
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] |
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°24′N 5°48′E / 15.4°N 5.8°E |
Approximate paleocoordinates | 5°06′N 0°36′E / 5.1°N 0.6°E |
Region |
Tahoua Sokoto |
Country |
Niger Nigeria |
Extent | Iullemmeden Basin |
Type section | |
Named for | Dukamaje, Sokoto, Nigeria |
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]
Dinosaurs of the Dukamaje Formation | ||||
---|---|---|---|---|
Taxa | Presence | Description | Images | |
Genus:
|
|
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] |