Ameki, SE of (Eocene of Nigeria)

Where: Nigeria (5.6° N, 7.5° E)

• Paleocoordinates: 3.5° S, 7.7° E (Wright 2013)

• coordinate stated in text

• local area-level geographic resolution

When: Ameki Formation (Bende-Ameki Group), Bartonian (41.0 - 37.7 Ma)

• Bartonian age after Gingerich (2010)

• formation-level stratigraphic resolution

Environment/lithology: deep-water; lithology not reported

• The Ameki Formation exhibits deeper marine formations that progress seaward due to the abundance of shale in the stratigraphy.

Size class: macrofossils

Preservation: original phosphate

Collection methods: surface (float),

Primary reference: L.B. Halstead and J. A. Middleton. 1974. New material of the archaeocete whale Pappocetus lugardi Andrews, from the middle Eocene of Nigeria. Journal of Mining and Geology 8(1 & 2):81-85 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 32905: authorized by Mark Uhen, entered by Mark Uhen on 18.07.2003

Creative Commons license: CC0 (CC0)

Taxonomic list

Mammalia
 Cetacea - Protocetidae
Pappocetus lugardi Andrews 1920 whale
Reptilia
 Squamata - Palaeophiidae
? Pterosphenus sp.1 Lucas 1898 snake
Osteichthyes
 Siluriformes - Claroteidae
Chrysichthys eaglesomei n. sp.2 White 1926 catfish
 Siluriformes - Ariidae
Arius hewardbelli n. sp.2 White 1926 Ariid catfish
Arius africanus n. sp.2 Frost 1926 Ariid catfish
Arius amekiensis n. sp.2 Frost 1926 Ariid catfish
Arius kitsoni n. sp.2 White 1926 Ariid catfish
Arius angulatus n. sp.2 Frost 1926 Ariid catfish
 Scombriformes -
Scombramphodon woodwardi n. sp.2 White 1926 ray-finned fish
 Acanthopterygii - Sphyraenidae
Sphyraena lugardi n. sp.2 White 1926 barracuda
 Perciformes - Sparidae
Pagellus concavus n. sp.2 Frost 1926 perch-like fish
 Labriformes - Labridae
Pseudosphaerodon pycnodoides n. sp.2 White 1926 ray-finned fish
Crenilabrus eocenicus n. sp.2 White 1926 ray-finned fish
Platylaemus nigeriensis n. sp.2 White 1926 ray-finned fish
 Lutjaniformes - Sciaenidae
Sciaena simplex n. sp.2 Frost 1926 ray-finned fish
Chondrichthyes
 Rhinopristiformes - Pristidae
Pristis lathami2, "Pristis mucrodens n. sp." = Anoxypristis mucrodens2, "Pristis hamatus n. sp." = Anoxypristis mucrodens2, Propristis schweinfurthi2
Pristis lathami2 Galeotti 1837 sawfish
"Pristis mucrodens n. sp." = Anoxypristis mucrodens2 White 1926 sawfish
"Pristis hamatus n. sp." = Anoxypristis mucrodens2 White 1926 sawfish
Propristis schweinfurthi2 Priem 1897 sawfish
 Myliobatiformes - Myliobatidae
Myliobatis ? toliapicus2, "Myliobatis dixoni" = Aetomylaeus dixoni2, "Myliobatis striatus" = Aetomylaeus striatus2
Myliobatis ? toliapicus2 Agassiz 1843 eagle ray
"Myliobatis dixoni" = Aetomylaeus dixoni2 Agassiz 1843 eagle ray
"Myliobatis striatus" = Aetomylaeus striatus2 Agassiz 1843 eagle ray
 Myliobatiformes - Rhinopteridae
Rhinoptera sherborni n. sp.2 White 1926 cownose ray
 Carcharhiniformes - Carcharhinidae
Carcharhinus nigeriensis n. sp.2 White 1926 requiem shark
Galeocerdo latidens2 Agassiz 1835 tiger shark
Aprionodon amekiensis n. sp.2 White 1926 requiem shark
Hypoprion overricus n. sp.2 White 1926 requiem shark
 Lamniformes - Odontaspididae
"Odontaspis koerti" = Brachycarcharias koerti2
"Odontaspis koerti" = Brachycarcharias koerti2 Stromer 1910 sand tiger shark
 Lamniformes - Lamnidae
Carcharodon debrayi2, "Oxyrhina desori" = Isurus desorii2
Carcharodon debrayi2 Leriche 1906 white shark
"Oxyrhina desori" = Isurus desorii2 Agassiz 1843 mackerel shark
 Ichthyodorulites -
Cylindracanthus rectus2 Agassiz 1843 elasmobranch