Koum Formation
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Sub-unitsMbissirri Member, Grés de Gaba Member
PrimarySandstone
OtherClaystone, siltstone, conglomerate
| 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) | |
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]
Dinosaurs
The following fossils have been found in the formation:[1]
Color key
|
Notes Uncertain or tentative taxa are in small text; |
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 | ||||