Ameki, SE of: Bartonian, Nigeria

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Palaeophiidae
? Pterosphenus sp. Lucas 1898
Georgalis 2023 1 specimen
Mammalia - Cetacea - Protocetidae
Pappocetus lugardi Andrews 1920
4 specimens
Acipenseriformes
Cylindracanthus rectus (Agassiz 1843)
White 1926
Actinopteri - Acanthopteri - Sphyraenidae
Sphyraena lugardi n. sp. White 1926
White 1926
Actinopteri - Labriformes - Labridae
Crenilabrus eocenicus n. sp. White 1926
White 1926
Platylaemus nigeriensis n. sp. White 1926
White 1926
Pseudosphaerodon pycnodoides n. sp. White 1926
White 1926
Actinopteri - Perciformes - Sparidae
Pagellus concavus n. sp. Frost 1926
White 1926
Actinopteri - Acanthuriformes - Sciaenidae
Sciaena simplex n. sp. Frost 1926
White 1926
Actinopteri - Scombriformes
Scombramphodon woodwardi n. sp. White 1926
White 1926
Actinopteri - Siluriformes - Claroteidae
Chrysichthys eaglesomei n. sp. White 1926
White 1926
Actinopteri - Siluriformes - Ariidae
Arius africanus n. sp. Frost 1926
White 1926
Arius hewardbelli n. sp. White 1926
White 1926
Arius amekiensis n. sp. Frost 1926
White 1926
Arius kitsoni n. sp. White 1926
White 1926
Arius angulatus n. sp. Frost 1926
White 1926
Chondrichthyes - Myliobatiformes - Myliobatidae
Myliobatis dixoni Agassiz 1843
White 1926
recombined as Aetomylaeus dixoni
Myliobatis striatus (Agassiz 1843)
White 1926
recombined as Aetomylaeus striatus
Myliobatis ? toliapicus (Agassiz 1843)
White 1926
Rhinoptera sherborni n. sp. White 1926
White 1926
Chondrichthyes - Rhinopristiformes - Pristidae
Pristis hamatus n. sp. White 1926
White 1926
Pristis mucrodens n. sp. White 1926
White 1926
Pristis lathami Galeotti 1837
White 1926
Propristis schweinfurthi Priem 1897
White 1926
Chondrichthyes - Carcharhiniformes - Galeocerdidae
Galeocerdo latidens (Agassiz 1835)
White 1926
Chondrichthyes - Carcharhiniformes - Carcharhinidae
Carcharhinus nigeriensis n. sp. White 1926
White 1926
Aprionodon amekiensis n. sp. White 1926
White 1926
Hypoprion overricus n. sp. White 1926
White 1926
Chondrichthyes - Lamniformes - Odontaspididae
Odontaspis koerti (Stromer 1910)
White 1926
recombined as Brachycarcharias koerti
Chondrichthyes - Lamniformes - Lamnidae
Carcharodon debrayi Leriche 1906
White 1926
Oxyrhina desori (Agassiz 1843)
White 1926
synonym of Isurus oxyrinchus
see common names

Geography
Country:Nigeria
Coordinates: 5.6° North, 7.5° East (view map)
Paleocoordinates:1.1° North, 2.0° East
Basis of coordinate:stated in text
Geographic resolution:local area
Time
Period:Paleogene Epoch:Eocene
Stage:Bartonian 10 m.y. bin:Cenozoic 3
*Period:Middle Tertiary - Middle Tertiary *Epoch:Middle Eocene - Middle Eocene
Key time interval:Bartonian
Age range of interval:41.20000 - 37.71000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Bende-Ameki Formation:Ameki
Stratigraphic resolution:formation
Stratigraphy comments: Bartonian age after Gingerich (2010)
Lithology and environment
Primary lithology: not reported
Environment:deep-water indet.
Geology comments: The Ameki Formation exhibits deeper marine formations that progress seaward due to the abundance of shale in the stratigraphy.
Taphonomy
Modes of preservation:body,original phosphate
Size of fossils:macrofossils
Associated major elements:some
Disassociated major elements:some
Collection methods and comments
Collection methods:surface (float),field collection
Collection size:4 specimens
Reason for describing collection:taxonomic analysis
Metadata
Database number:32905
Authorizer:M. Uhen Enterer:M. Uhen
Modifier:M. Uhen Research group:vertebrate
Created:2003-07-18 06:35:12 Last modified:2023-07-03 09:51:09
Access level:the public Released:2003-07-18 06:35:12
Creative Commons license:CC BY
Reference information

Primary reference:
8817. 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]

Secondary references:

33206 E. A. Fayose and L. O. Asseez. 1972. Micropalaeontological Investigation of Ewekoro Area, Southwestern Nigeria. Micropaleontology 18(3):369-385 [M. Uhen/S. Strother]
85153 G. L. Georgalis. 2023. First potential occurrence of the large aquatic snake Pterosphenus (Serpentes, Palaeophiidae) from Nigeria, with further documentation of Pterosphenus schweinfurthi from Egypt. Alcheringa [M. Uhen/M. Uhen]
33106 P. D. Gingerich. 2010. Cetacea. In L. Werdelin & W. J. Sanders (ed.), Cenozoic Mammals of Africa 873-899 [M. Uhen/M. Uhen]
15226 P. D. Gingerich, I. S. Zalmout, M. Ul-Haq and M. A. Bhatti. 2005. Makracetus bidens, a new protocetid archaeocete (Mammalia, Cetacea) from the early middle Eocene of Balochistan (Pakistan). Contributions from the Museum of Paleontology, University of Michigan 31(9):197-210 [M. Uhen/M. Uhen/M. Uhen]
34745 E. I. White. 1926. Eocene fishes from Nigeria. Bulletin of the Geological Survey of Nigeria 10:1-87 [M. Uhen/M. Uhen/M. Uhen]
11995 E. M. Williams. 1998. Synopsis of the Earliest Cetaceans: Pakicetidae, Ambulocetidae, Remingtonocetidae, and Protocetidae. The Emergence of Whales 1-28 [M. Uhen/M. Uhen/M. Uhen]