Ameki, SE of (Eocene of Nigeria)

Where: Nigeria (5.6° N, 7.5° E: paleocoordinates 1.1° N, 2.0° E)

• coordinate stated in text

• local area-level geographic resolution

When: Ameki Formation (Bende-Ameki Group), Bartonian (41.3 - 38.0 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: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Myliobatiformes - Myliobatidae
Myliobatis ? toliapicus2, "Myliobatis dixoni" = Aetomylaeus dixoni2, "Myliobatis striatus" = Aetomylaeus striatus2, Rhinoptera sherborni n. sp.2
Myliobatis ? toliapicus2 Agassiz 1843 eagle ray
"Myliobatis dixoni" = Aetomylaeus dixoni2 Agassiz 1843 eagle ray
"Myliobatis striatus" = Aetomylaeus striatus2 Agassiz 1843 eagle ray
Rhinoptera sherborni n. sp.2 White 1926 cownose ray
 Rhinopristiformes - Pristidae
Pristis lathami2 Galeotti 1837 sawfish
Pristis mucrodens n. sp.2 White 1926 sawfish
Pristis hamatus n. sp.2 White 1926 sawfish
Propristis schweinfurthi2 Priem 1897 sawfish
 Carcharhiniformes - Carcharhinidae
Hypoprion overricus n. sp.2 White 1926 requiem shark
Aprionodon amekiensis n. sp.2 White 1926 requiem shark
Carcharhinus nigeriensis n. sp.2 White 1926 requiem shark
 Carcharhiniformes - Galeocerdidae
Galeocerdo latidens2 Agassiz 1835 tiger shark
 Lamniformes - Odontaspididae
"Odontaspis koerti" = Brachycarcharias koerti2
"Odontaspis koerti" = Brachycarcharias koerti2 Stromer 1910 sand tiger shark
 Lamniformes - Lamnidae
"Oxyrhina desori" = Isurus oxyrinchus2, Carcharodon debrayi2
"Oxyrhina desori" = Isurus oxyrinchus2 Rafinesque 1810 mackerel shark
Carcharodon debrayi2 Leriche 1906 white shark
Osteichthyes
 Acipenseriformes -
Cylindracanthus rectus2 Agassiz 1843 ray-finned fish
Mammalia
 Cetacea - Protocetidae
Pappocetus lugardi Andrews 1920 whale
Reptilia
 Squamata - Palaeophiidae
? Pterosphenus sp.1 Lucas 1898 snake
Actinopteri
 Acanthuriformes - Sciaenidae
Sciaena simplex n. sp.2 Frost 1926
 Labriformes - Labridae
Platylaemus nigeriensis n. sp.2 White 1926
Crenilabrus eocenicus n. sp.2 White 1926
Pseudosphaerodon pycnodoides n. sp.2 White 1926
 Perciformes - Sparidae
Pagellus concavus n. sp.2 Frost 1926 perch-like fish
 Scombriformes -
Scombramphodon woodwardi n. sp.2 White 1926
 Siluriformes - Ariidae
Arius angulatus n. sp.2 Frost 1926 Ariid catfish
Arius hewardbelli n. sp.2 White 1926 Ariid catfish
Arius kitsoni 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
 Siluriformes - Claroteidae
Chrysichthys eaglesomei n. sp.2 White 1926 catfish
 Acanthopteri - Sphyraenidae
Sphyraena lugardi n. sp.2 White 1926 barracuda