Ameki Formation
Geological formation in Nigeria
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The Ameki Formation is a Lutetian to Bartonian geological formation located in Nigeria. It belongs to the Bende-Ameki Group, which also consists of two formations namely Nanka Formation, Nsugbe Formation.[1][2]
| Ameki Formation | |
|---|---|
| Stratigraphic range: Lutetian-Bartonian | |
| Type | Geological formation |
| Unit of | Bende-Ameki Group |
| Lithology | |
| Primary | Shale |
| Other | Sandstone, siltstone |
| Location | |
| Coordinates | 6.0°N 7.0°E |
| Approximate paleocoordinates | 1.6°N 1.5°E |
| Country | Nigeria |
| Extent | Niger Delta Basin |
| Type section | |
| Named for | Ameki |
  Ameki Formation (Nigeria) | |
Fossil content
Among others, the following fossils have been reported in the formation:[3][4]
Mammals
| Mammals reported from the Ameki Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Pappocetus | P. lugardi | Ombialla District.[5] | Mandibles.[5][6] | A protocetid. | |
Reptiles
Birds
| Birds reported from the Ameki Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Gigantornis | G. eaglesomei | A pelagornithid. | |||
Squamates
| Squamates reported from the Ameki Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Pterosphenus | Trunk vertebra.[7] | A palaeophiid. | |||
Turtles
| Turtles reported from the Ameki Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Cosmochelys | C. dolloi | Ombialla District.[5] | Portions of carapace.[5] | A dermochelyid. | |
Invertebrates
Cephalopods
| Cephalopods reported from the Ameki Formation | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Deltoidonautilus | D. nwajidei | Multiple specimens.[2] | A nautiloid. | ||