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′N14°30′E / 8.3°N 14.5°E |
Approximate paleocoordinates | 8°06′S5°00′E / 8.1°S 5.0°E |
Region | Nord |
Country | Cameroon |
Extent | Koum Basin |
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]
The following fossils have been found in the formation: [1]
Color key
| Notes Uncertain or tentative taxa are in small text; |
Sauropods of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Lithostrotia Indet. | Indeterminate | |||||
Rebbachisauridae Indet. | Indeterminate | |||||
Theropods of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Abelisauridae Indet. | Indeterminate | |||||
Baryonychinae Indet. [2] | Indeterminate | |||||
Caenagnathidae Indet. | Indeterminate | |||||
Carcharodontosauridae Indet. | Indeterminate | |||||
Noasauridae Indet. | Ineterminate | |||||
Therizinosauridae Indet. | Indeterminate | |||||
Ornithopods of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Dryosauridae Indet. | Indeterminate | |||||
Ouranosaurus [3] | O. nigeriensis | A sail-backed hadrosauriform iguanodontian | ||||
Polacanthinae Indet. | Indeterminate | |||||
Rhabdodontomorpha Indet. | Indeterminate | |||||
Stegosauridae Indet. | Indeterminate | |||||
Pterosaurs of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Anhangueridae Indet. | Indeterminate | |||||
Squamates of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Simoliophiidae Indet. | Indeterminate | |||||
Plesiosaurs of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Leptocleidus | L. sp. | a leptocleidid plesiosaur | ||||
Turtles of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Bothremydidae Indet. | Indeterminate | |||||
Amphibians of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Chigutisauridae Indet. | Indeterminate | |||||
Pipidae Indet. | Indeterminate | |||||
Crocodyliformes of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Araripesuchus | A. sp. | A uruguaysuchid notosuchian | ||||
Mammals of the Koum Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Abelodon | A. abeli | A peramurid mammal | ||||
Cartilaginous fish of the Feliz Deserto Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Hybodus | H. sp. | A hybodontid shark | ||||
Onchopristis | O. numida | A giant sawskate | ||||
Lobbed-finned fish of the Feliz Deserto Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Ceratodus | C. sp. | A ceradodontid lungfish | ||||
Mawsonia | M. gigas | A mawsoniid coelacanth | ||||
Ray-finned fish of the Feliz Deserto Formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Atractosteus | A. africanus | A gar | ||||
Lepidotes | L. sp. | A lepidotid fish | ||||
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