Bivalvia, Schenck collection, Ameki (Eocene of Nigeria)

Where: Nigeria (5.0° N, 7.5° E: paleocoordinates 0.7° S, 1.4° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Ameki Formation, Lutetian (47.8 - 41.3 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; green, argillaceous, sandy mudstone and sandstone

• The formation is predominantly greenish-grey clayey sandstone and sandy claystone. It may locally show shaley development or inclusions of white and mottled claystone and sandstone. The typical greenish gray mudstone includes variable amounts of interbedded sandstone.

Size class: macrofossils

Primary reference: A. Chavan. 1938. Un groupe africain de carditidés, Cossmannella Mayer-Eymar. Bulletin de la Société Géologique de France 8(1):3-10 [L. Villier/L. Villier]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 60711: authorized by Loic Villier, entered by Loic Villier on 21.05.2006, edited by Jocelyn Sessa

Creative Commons license: CC BY (attribution)

Taxonomic list

• Foraminifera, ostracods, fish, crustaceans, and cephalopods are compiled by Adegoke (1968) as occurring in this formation, no specific locality information is given.
unclassified
  -
Foraminifera
 Buliminoidea - Buliminidae
Nodosariata
 Nodosariida - Nodosariidae
Foraminifera
 Globigerinaceae - Heterohelicidae
"Textularia globulosa" = Heterohelix globulosa
"Textularia globulosa" = Heterohelix globulosa Ehrenberg 1840
 Globigerinaceae - Globotruncanidae
"Globigerina cretacea" = Archaeoglobigerina cretacea
"Globigerina cretacea" = Archaeoglobigerina cretacea d'Orbigny 1840
Globothalamea
 Rotaliida - Discorbidae
Foraminifera
 Lituolida - Ammobaculinidae
 Lituolida - Lituolidae
Textularia gramen dOrbigny 1846
  -
 Biokovinacea - Charentiidae
 Globigerinoidea - Globorotaliidae
"Pullenia obliquiloculata" = Pulleniatina obliquiloculata, "Globigerina pachyderma" = Neogloboquadrina pachyderma, "Globigerina dutertrei" = Neogloboquadrina dutertrei
"Pullenia obliquiloculata" = Pulleniatina obliquiloculata Parker and Jones 1865
"Globigerina pachyderma" = Neogloboquadrina pachyderma Ehrenberg 1861
"Globigerina dutertrei" = Neogloboquadrina dutertrei d'Orbigny 1839
Tubothalamea
 Miliolida -
 Miliolida - Miliolidae
Spiroloculina excavata d'Orbigny 1846
Foraminifera
 Rotaliina - Cassidulinidae
 Buliminacea - Uvigerinidae
 Discorbacea - Eponididae
 Rotaliina - Bolivinidae
Anthozoa
 Scleractinia - Turbinoliidae
Turbinolia sp. Lamarck 1816 stony coral
Cephalopoda
  -
Bivalvia
 Carditida - Carditidae
Cossmannella costaenodulosis clam
stated as abundant in the field
"Venericardia cf. planicosta" = Venericor planicosta Lamarck 1801 clam
Malacostraca
 Decapoda - Carpiliidae
Holcocarcinus sulcatus Withers 1924 crab
Ostracoda
 Podocopida - Loxoconchidae
 Podocopida - Leguminocythereidae
 Podocopida - Bythocyprididae
Chondrichthyes
 Myliobatiformes - Myliobatidae
Myliobatis toliapicus, "Myliobatis dixoni" = Aetomylaeus dixoni, "Myliobatis striatus" = Aetomylaeus striatus, Rhinoptera sherborni
Myliobatis toliapicus Agassiz 1843 eagle ray
"Myliobatis dixoni" = Aetomylaeus dixoni Agassiz 1843 eagle ray
"Myliobatis striatus" = Aetomylaeus striatus Agassiz 1843 eagle ray
Rhinoptera sherborni White 1926 cownose ray
 Rhinopristiformes - Pristidae
Pristis lathami Galeotti 1837 sawfish
Pristis mucrodens White 1926 sawfish
Pristis hamatus White 1926 sawfish
Propristis schweinfurthi Priem 1897 sawfish
 Carcharhiniformes - Carcharhinidae
Hypoprion overricus White 1926 requiem shark
Aprionodon amekiensis White 1926 requiem shark
 Carcharhiniformes - Galeocerdidae
Galeocerdo latidens Agassiz 1835 tiger shark
 Lamniformes - Odontaspididae
"Odontaspis koerti" = Brachycarcharias koerti
"Odontaspis koerti" = Brachycarcharias koerti Stromer 1910 sand tiger shark
Odontaspis koerti and Odontaspis koerti itoriensis
 Lamniformes - Lamnidae
"Oxyrhina desori" = Isurus oxyrinchus Rafinesque 1810 mackerel shark
Oxyrhina desori praecursor
Carcharodon debrayi Leriche 1906 white shark
Osteichthyes
 Acipenseriformes -
Cylindracanthus rectus Agassiz 1843 ray-finned fish
Actinopteri
 Acanthuriformes - Sciaenidae
 Labriformes - Labridae
 Perciformes - Sparidae
Otolithus (Pagellus) concavus Frost 1926 perch-like fish
 Scombriformes -
 Siluriformes - Ariidae
Otolithus (Arius) angulatus Frost 1926 Ariid catfish
Arius hewardbelli White 1926 Ariid catfish
Arius kitsoni White 1926 Ariid catfish
Otolithus (Arius) africanus Frost 1926 Ariid catfish
Otolithus (Arius) amekiensis Frost 1926 Ariid catfish
 Siluriformes - Claroteidae
Chrysichthys eaglesomei White 1926 catfish
 Acanthopteri - Sphyraenidae
Sphyraena lugardi White 1926 barracuda
Truncatulina
  -