Ameki Formation

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 / 6.0; 7.0
Approximate paleocoordinates	1.6°N 1.5°E / 1.6; 1.5
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.

See also

• List of fossil sites