Koum Formation

Koum Formation
Stratigraphic range: Aptian-Albian
~
TypeGeological formation
Sub-unitsMbissirri Member, Grés de Gaba Member
Lithology
PrimarySandstone
OtherClaystone, siltstone, conglomerate
Location
Coordinates8°18′N 14°30′E / 8.3°N 14.5°E / 8.3; 14.5
Approximate paleocoordinates8°06′S 5°00′E / 8.1°S 5.0°E / -8.1; 5.0
RegionNord
CountryCameroon
ExtentKoum Basin
Koum Formation (Cameroon)

The Koum Formation is a geological formation in the North Province of Cameroon, western Africa.

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

The following fossils have been found in the formation:[1]

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Dinosaurs

Ornithopods

Ornithopods of the Koum Formation
Genus Species Location Stratigraphic position Material Notes Images
Ouranosaurus[2] O. nigeriensis A sail-backed hadrosauriform iguanodontian

Sauropoda

Sauropods of the Koum Formation
Genus Species Location Stratigraphic position Material Notes Images
Sauropoda Indet. Indeterminate

Theropods

Theropods of the Koum Formation
Genus Species Location Stratigraphic position Material Notes Images
Baryonychinae Indet.[3] Indeterminate A spinosaurid theropod
Theropoda Indet. Indeterminate

Thyreophorans

Thyreophorans of the Koum Formation
Genus Species Location Stratigraphic position Material Notes Images
?Thyreophora Indet. Indeterminate

Crocodylomorphs

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

Mammals

Mammals of the Koum Formation
Genus Species Location Stratigraphic position Material Notes Images
Abelodon A. abeli A peramurid zatherian

See also

References

  1. ^ a b Weishampel et al., 2004, pp.571-573
  2. ^ 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.
  3. ^ 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

Further reading

  • 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
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