Ameki Railway - Cutting #11, southern Nigeria: Lutetian, Nigeria

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Sepiida - Belosepiidae
Belosepia sepioidea Blainville 1825
Gastropoda - Heterostropha - Architectonicidae
Stellaxis bicingulata Newton 1922
Gastropoda - Turritellidae
Turritella cf. sulcifera Deshayes 1832
recombined as Ispharina sulcifera
Gastropoda - Neotaenioglossa - Calyptraeidae
Crepidula falconeri Newton 1922
Gastropoda - Naticidae
Sinum cf. clathratum Gmelin 1790
Gastropoda - Neogastropoda - Buccinidae
Cominella douvillei Newton 1922
Gastropoda - Neogastropoda - Pseudolividae
Buccinorbis kitsoni Newton 1922
Gastropoda - Neogastropoda - Clavatulidae
Surcula ingens (Mayer-Eymar 1895)
Gastropoda - Neogastropoda - Conidae
Conospirus cf. parisiensis Deshayes 1835
Gastropoda - Neogastropoda - Volutidae
Volutospina conicoturrita Newton 1922
Gastropoda - Pediculariidae
Amphiperas nigeriensis Newton 1922
recombined as Eovolva nigeriensis
Bivalvia - Arcida - Arcidae
Anadara nigeriensis Newton 1922
recombined as Protonoetia nigeriensis
Fossularca africana Newton 1922
Bivalvia - Arcida - Glycymerididae
Glycymeris nigeriensis Newton 1922
Bivalvia - Lucinida - Lucinidae
Phacoides eaglesomei Newton 1922
Bivalvia - Carditida - Carditidae
Cardita costaenodulosis Newton 1922
Cardita cf. costaeirregularis Newton 1922
see common names

Geography
Country:Nigeria County:Omobialla
Coordinates: 5.0° North, 7.5° East (view map)
Paleocoordinates:0.7° South, 1.4° East
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Eocene
Stage:Lutetian 10 m.y. bin:Cenozoic 2
Key time interval:Lutetian
Age range of interval:47.80000 - 41.20000 m.y. ago
Stratigraphy
Geological group:Bende-Ameki Formation:Ameki
Stratigraphic resolution:bed
Stratigraphy comments: Cutting #11. 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.
Lithology and environment
Primary lithology:concretionary poorly lithified carbonaceous "shale"
Secondary lithology:concretionary carbonaceous claystone
Includes fossils?Y
Includes fossils?Y
Lithology description: Facies may include: estuarine shales, clays and marls, with septarian nodules and pieces of coal and resin.
Environment:estuary/bay
Geology comments: Described as estuarine facies
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: Collected by Sir Frederick Lugard, Sir J. Eaglesome, A. Kitson, W. Bell over several occasions, but with consistency in original of collections.
Taxonomic list comments:Obviously contains antiquated taxonomy. Will vett taxonomy according to that presented by Arua et al. (1987, 1988, 1989) - A. Hendy.
Metadata
Also known as:Cutting #11
Database number:51242
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2005-06-01 10:27:28 Last modified:2013-11-25 13:37:23
Access level:the public Released:2005-06-01 10:27:28
Creative Commons license:CC BY
Reference information

Primary reference:
13646. R. B. Newton. 1922. Eocene Mollusca from Nigeria. Geological Survey of Nigeria Bulletin 3 [A. Miller/A. Hendy/A. Hendy]