Ameki Railway - Cutting #1, southern Nigeria: Lutetian, Nigeria
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crepidula falconeri
Newton 1922
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Calyptraea crepidularis
Lamarck 1802
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Locality not given, so I put it in 1 (PJW) | ||||||||||
= Turbocalyptraea scabrosa n. gen., n. sp.
Eames 1957
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Eames 1957 | |||||||||
Gastropoda
- Turritellidae
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Turritella mauryana
Newton 1922
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Gastropoda
- Neogastropoda
- Volutidae
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Volutospina conicoturrita
Newton 1922
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Athleta lugardi
Newton 1922
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Gastropoda
- Neogastropoda
- Muricidae
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Pteropurpura cf. tricarinata
Lamarck 1803
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Poirieria cf. calcitrapa
Lamarck 1803
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Gastropoda
- Neogastropoda
- Pseudolividae
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Buccinorbis kitsoni
Newton 1922
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Gastropoda
- Neogastropoda
- Buccinidae
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Cominella douvillei
Newton 1922
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Strepsidura spirata
Newton 1922
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Gastropoda
- Neogastropoda
- Melongenidae
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Bulbifusus nigieriensis
Newton 1922
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recombined as Pseudomazzalina nigeriensis | ||||||||||
Gastropoda
- Neogastropoda
- Cancellariidae
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Bonellitia cf. evulsa
Solander 1766
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Gastropoda
- Neogastropoda
- Turridae
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Eopleurotoma nigeriensis
Newton 1922
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Gastropoda
- Neogastropoda
- Clavatulidae
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Surcula africana
Newton 1922
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Gastropoda
- Neogastropoda
- Conidae
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Conospirus cf. parisiensis
Deshayes 1835
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Gastropoda
- Pediculariidae
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Amphiperas nigeriensis
Newton 1922
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recombined as Eovolva nigeriensis | ||||||||||
Gastropoda
- Rostellariidae
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Rostellaria unidigitata
Newton 1922
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recombined as Cyrtulotibia unidigitata | ||||||||||
Semiterebellum suturocostatum
Newton 1922
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recombined as Amekichilus suturocostatum | ||||||||||
Gastropoda
- Heterostropha
- Architectonicidae
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Solariaxis cf. spectabilis
Sowerby 1850
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Solariaxis cf. canaliculata
Lamarck 1804
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Stellaxis bicingulata
Newton 1922
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Bivalvia
- Nuculida
- Nuculidae
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Nucula costaeimbricatis
Newton 1922
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Bivalvia
- Carditida
- Carditidae
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Cardita costaenodulosis
Newton 1922
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Bivalvia
- Pholadida
- Corbulidae
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Corbula rugosa
Lamarck 1806
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recombined as Notocorbula rugosa | ||||||||||
Bivalvia
- Pholadida
- Raetomyidae
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Raetomya schweinfurthi
Mayer-Eymar 1887
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Bivalvia
- Cardiida
- Mactridae
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Mactra semisulcata
Lamarck 1805
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recombined as Spisula semisulcata | ||||||||||
Bivalvia
- Cardiida
- Cardiidae
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Cardium cf. obliquum
Lamarck 1805
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recombined as Loxocardium obliquum | ||||||||||
Bivalvia
- Cardiida
- Tellinidae
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Peronaea nigeriensis
Newton 1922
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Bivalvia
- Arcida
- Arcidae
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Striarca africana
Newton 1922
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Anadara nigeriensis
Newton 1922
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recombined as Protonoetia nigeriensis | ||||||||||
Fossularca africana
Newton 1922
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea cf. marginidentata
Wood 1861
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Ostrea cf. ludensis
Deshayes 1861
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unclassified
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Trivelina cf. sphenarium
Bayan 1873
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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 #1. 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 #1 | ||
Database number: | 51237 | ||
Authorizer: | A. Hendy, P. Wagner | Enterer: | A. Hendy, P. Wagner |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2005-06-01 10:24:20 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2005-06-01 10:24:20 |
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] |
Secondary references:
58496 | F. E. Eames. 1957. Eocene Mollusca from Nigeria: a revision. Bulletin of the British Museum (Natural History), Geology 3:25-70 [P. Wagner/P. Wagner] |