The Koum Formation is a geological formation in the North Province of Cameroon, western Africa.
| Koum Formation | |
|---|---|
| Stratigraphic range: Aptian-Albian ~ | |
| Type | Geological formation |
| Sub-units | Mbissirri Member, Grés de Gaba Member |
| Lithology | |
| Primary | Sandstone |
| Other | Claystone, siltstone, conglomerate |
| Location | |
| Coordinates | 8°18′N 14°30′E / 8.3°N 14.5°E |
| Approximate paleocoordinates | 8°06′S 5°00′E / 8.1°S 5.0°E |
| Region | Nord |
| Country | Cameroon |
| Extent | Koum Basin |
  Koum Formation (Cameroon) | |
Its strata date back to the Aptian and Albian stages of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1]
Fossil content
editThe following fossils have been found in the formation:[1]
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Dinosaurs
editOrnithischians
edit| Ornithischians of the Koum Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Ouranosaurus[2] | O. nigeriensis | A sail-backed ouranosaurian styracosternan |  | |||
| ?Thyreophora Indet. | Indeterminate | |||||
Sauropoda
editTheropods
edit| Theropods of the Koum Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Baryonychinae Indet.[3] | Indeterminate | A baryonychine spinosaurid | ||||
| Theropoda Indet. | Indeterminate | |||||
Crocodylomorphs
edit| Crocodylomorphs of the Koum Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Araripesuchus | A. wegeneri | A uruguaysuchid notosuchian |  | |||
| Brillanceausuchus | B. babouriensis | A paralligatorid crocodyliform | ||||
| Sebecosuchia Indet. | Indeterminate | |||||
Mammals
editSee also
editReferences
edit- 1 2 Weishampel et al., 2004, pp.571-573
- ↑ Congleton, J.D. (1990). "Vertebrate Paleontology of the Koum Basin, Northern Cameroon, and Archosaurian Paleobiogeography in the Early Cretaceous". Department of Geology, Southern Methodist University, Dallas.
- ↑ Bertin, Tor (2010). "A Catalogue of Material and Review of the Spinosauridae". PalArch's Journal of Vertebrate Palaeontology. 7 (4): 01–39. ISSN 1567-2158.
Bibliography
edit- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
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Further reading
edit- J. D. Congleton. 1990. Vertebrate Paleontology of the Koum Basin, Northern Cameroon, and Archosaurian Paleobiogeography in the Early Cretaceous. Department of Geology, Southern Methodist University, Dallas xv-245
- L. J. Flynn and M. Brunet. 1989. Early Cretaceous vertebrates from Cameroon. Journal of Vertebrate Paleontology 9(3, suppl.):21A