Ameki Railway - Cutting #12, southern Nigeria: Lutetian, Nigeria
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris 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 | |||||||
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Fossularca africana
Newton 1922
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Bivalvia
- Pectinida
- Plicatulidae
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Plicatula polymorpha
Bellardi 1854
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Bivalvia
- Carditida
- Carditidae
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Cardita costaenodulosis
Newton 1922
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Cardita cf. costaeirregularis
Newton 1922
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Bivalvia
- Lucinida
- Lucinidae
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Phacoides eaglesomei
Newton 1922
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Bivalvia
- Cardiida
- Veneridae
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Callista kitsoni
Newton 1922
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Cordiopsis incrassata
(Nyst 1836)
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Gastropoda
- Heterostropha
- Architectonicidae
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Stellaxis bicingulata
Newton 1922
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Solariaxis cf. spectabilis
Sowerby 1850
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Gastropoda
- Turritellidae
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Turritella cf. sulcifera
Deshayes 1832
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| recombined as Ispharina sulcifera | |||||||
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Turritella mauryana
Newton 1922
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Gastropoda
- Naticidae
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Neverita cf. calvimontana
Deshayes 1864
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Sinum cf. clathratum
Gmelin 1790
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Gastropoda
- Pediculariidae
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Amphiperas nigeriensis
Newton 1922
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| recombined as Eovolva nigeriensis | |||||||
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Gastropoda
- Neogastropoda
- Buccinidae
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Hilda turriculata
Newton 1922
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Janiopsis nigeriensis
Newton 1922
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Strepsidura spirata
Newton 1922
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Gastropoda
- Neogastropoda
- Cancellariidae
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Bonellitia cf. evulsa
Solander 1766
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Cancellaria multiplicis
Newton 1922
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Gastropoda
- Neogastropoda
- Pseudolividae
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Buccinorbis kitsoni
Newton 1922
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Gastropoda
- Neogastropoda
- Conidae
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Conospirus cf. parisiensis
Deshayes 1835
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Gastropoda
- Neogastropoda
- Clavatulidae
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Surcula africana
Newton 1922
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Gastropoda
- Neogastropoda
- Volutidae
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Athleta lugardi
Newton 1922
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Volutospina conicoturrita
Newton 1922
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Volutospina multispinosa
Newton 1922
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Gastropoda
- Neogastropoda
- Muricidae
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Poirieria cf. calcitrapa
Lamarck 1803
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Gastropoda
- Rostellariidae
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Rostellaria unidigitata
Newton 1922
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| recombined as Cyrtulotibia unidigitata | |||||||
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Semiterebellum elongatum
Newton 1922
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| recombined as Africoterebellum elongatum | |||||||
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Semiterebellum suturocostatum
Newton 1922
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| recombined as Amekichilus suturocostatum | |||||||
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Gastropoda
- Strombidae
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Rostellaria bidigitata
Newton 1922
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Gastropoda
- Xenophoridae
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Tugurium nigeriense
Newton 1922
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crepidula falconeri
Newton 1922
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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 #12. 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 #12 | ||
| Database number: | 51243 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2005-06-01 10:28:00 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2005-06-01 10:28:00 |
| 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] |