Also known as Cutting #15
Where: Nigeria (5.0° N, 7.5° E: paleocoordinates 0.7° S, 1.4° E)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Ameki Formation (Bende-Ameki Group), Lutetian (47.8 - 41.3 Ma)
• Cutting #15. No stratigraphic value can be assigned to cutting numbering. Collections presumably originate from the Ameki Fm (not stated in text, but highly likely based on age and geography). Newton states an upper Lutetian age. This has not be confirmed against publications of Arua and other Ameke Fm collections DO NOT state an age finer than "Eocene". This needs to be rectified as these will be orphaned in current binning scheme. Uhen's Ameki Fm collections state "Middle Eocene", which while encompassing the Lutetian will also be orphaned.
• bed-level stratigraphic resolution
Environment/lithology: estuary or bay; concretionary, carbonaceous shale and concretionary, carbonaceous claystone
Size class: macrofossils
Collection methods: Collected by Sir Frederick Lugard, Sir J. Eaglesome, A. Kitson, W. Bell over several occasions, but with consistency in original of collections.
Primary reference: R. B. Newton. 1922. Eocene Mollusca from Nigeria. Geological Survey of Nigeria Bulletin 3 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 51246: authorized by Austin Hendy, entered by Austin Hendy on 01.06.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Stellaxis bicingulata Newton 1922 sundial
Solariaxis cf. canaliculata Lamarck 1804 sundial
Solariaxis cf. spectabilis Sowerby 1850 sundial | |
"Turritella cf. sulcifera" = Ispharina sulcifera
"Turritella cf. sulcifera" = Ispharina sulcifera Deshayes 1832 turret shell | |
Crepidula falconeri Newton 1922 slipper shell | |
Strepsidura spirata Newton 1922 true whelk
Cominella douvillei Newton 1922 true whelk | |
Bonellitia cf. evulsa Solander 1766 snail | |
Buccinorbis kitsoni Newton 1922 snail | |
Surcula africana Newton 1922 snail | |
Conospirus cf. parisiensis Deshayes 1835 cone shell | |
Volutospina conicoturrita Newton 1922 volute
Volutospina multispinosa Newton 1922 volute | |
Poirieria cf. calcitrapa Lamarck 1803 murex snail | |
Rostellaria bidigitata Newton 1922 true conch | |
"Semiterebellum elongatum" = Africoterebellum elongatum, "Semiterebellum suturocostatum" = Amekichilus suturocostatum, "Rostellaria unidigitata" = Cyrtulotibia unidigitata
"Semiterebellum elongatum" = Africoterebellum elongatum Newton 1922 snail
"Semiterebellum suturocostatum" = Amekichilus suturocostatum Newton 1922 snail
"Rostellaria unidigitata" = Cyrtulotibia unidigitata Newton 1922 snail | |
"Amphiperas nigeriensis" = Eovolva nigeriensis
"Amphiperas nigeriensis" = Eovolva nigeriensis Newton 1922 snail | |
Tugurium nigeriense Newton 1922 carrier shell | |
Bivalvia | |
Ostrea cf. marginidentata Wood 1861 oyster | |
"Anadara nigeriensis" = Protonoetia nigeriensis, Fossularca africana
"Anadara nigeriensis" = Protonoetia nigeriensis Newton 1922 clam
Fossularca africana Newton 1922 ark | |
Glycymeris nigeriensis Newton 1922 clam | |
"Cardium cf. obliquum" = Loxocardium obliquum
"Cardium cf. obliquum" = Loxocardium obliquum Lamarck 1805 cockle | |
Cordiopsis incrassata Nyst 1836 venus clam | |
"Corbula rugosa" = Notocorbula rugosa
"Corbula rugosa" = Notocorbula rugosa Lamarck 1806 clam | |
Phacoides eaglesomei Newton 1922 clam | |
Cardita costaenodulosis Newton 1922 clam | |
Trivelina sphenarium | |
Trivelina cf. sphenarium Bayan 1873 |