Dukamaje Formation

Dukamaje Formation
Stratigraphic range: Maastrichtian[1]
Type Geological formation
Location
Country  Niger  Nigeria

The Dukamaje Formation is a geological formation in Niger 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]

Vertebrate paleofauna

Dinosaurs of the Dukamaje Formation
Taxa Presence Description Images

Genus:

  1. ?B. ingens.[1]
  1. Geographically present in Département De Tahoua, Niger.[1]
Mosasaurs of the Dukamaje Formation
Taxa Presence Description Images
Genus:
  1. I. aegyptiacus[2]
  1. Geographically present on Mt. Igdaman, near the village of Igdaman (or In Daman).[2]
 Mid-sized globidensine mosasaur.[3] Originally described as a plioplatecarpine. Durophagous.[2]
Genus:
  1. G. nigeriensis
  2. G. sp.[2]
  1. Type locality unknown. From the portion of the Dukamaje Formation located in Nigeria.
  2. Geographically present on Mt. Igdaman. From the portion of the Dukamaje Formation located in Niger.[2]
 Large mosasaur of uncertain affiliations. High number of foramina on the snout and small eyes indicate a murky-water hunter.[4]
Genus:
  1. ?A. sp.[2]
  1. Geographically present on Mt. Igdaman.[2]
 Represented here by four vertebrae, one from a juvenile. Fragmentary state makes identification difficult.[2]
Genus:
  1. H. sp.[2]
  1. Geographically present on Mt. Igdaman.[2]
 Mid-sized mosasaur. Represented here by four vertebrae.[2]
Genus:
  1. P. sp.[2]
  1. Geographically present on Mt. Igdaman.[2]
 Mid-sized plioplatecarpine mosasaur. Represented here by several vertebrae.[2]
Genus:
  1. P. sp.[2]
  1. Geographically present on Mt. Igdaman.[2]
 Mid-sized plioplatecarpine mosasaur. Represented here by a single fragmentary vertebrae.[2]
Genus:
  1. cf. M. hoffmannii[2]
  1. Geographically present on Mt. Igdaman.[2]
 Massive mosasaurine mosasaur. Represented here by a fragmentary tooth crown. The first example of Mosasaurus from Niger and Nigeria.[2]

See also

References

  1. 1 2 3 4 5 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.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Lingham-Soliar, Theagarten (1991). "Mosasaurs from the upper Cretaceous of Niger". Palaeontology. 34: 653–670.
  3. ↑ 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.
  4. ↑ "Tongues, venom glands, and the changing face of Goronyosaurus". Tetrapod Zoology. Retrieved 2017-01-11.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.