Lokpanta, northerly cutting [Eze-Aku Fm]: Early Turonian, Nigeria
collected by Zaborski
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Phylloceratida
- Phylloceratidae
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Phylloceras (Hypophylloceras) cf. bizonatum
(Fritsch 1872)
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Zaborski 1990 | 20 specimens | ||||||||
| (4 measurements) | ||||||||||
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Cephalopoda
- Ammonitida
- Vascoceratidae
|
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Fagesia levis
Renz 1982
|
35 specimens | |||||||||
| 29 specimens + six specimens which may belong to the same species | ||||||||||
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Vascoceras venezolanum
Renz 1982
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Zaborski 1990 | 27 specimens | ||||||||
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Neoptychites cephalotus
(Courtiller 1860)
|
4 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Acanthoceratidae
|
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Mammites nodosoides
(Schlüter 1871)
|
72 specimens | |||||||||
| (5 measurements) | ||||||||||
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Kamerunoceras puebloense
(Cobban and Scott 1972)
|
6 specimens | |||||||||
| four specimens + two specimens which may belong to the same species | ||||||||||
|
Paramammites polymorphus
(Pervinquiére 1907)
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Zaborski 1990 | 4 specimens | ||||||||
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Cephalopoda
- Ammonitida
- Pseudotissotidae
|
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? Herrickiceras sp.
Cobban and Hook 1980
|
1 specimen | |||||||||
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Cephalopoda
- Ammonitida
- Coilopoceratidae
|
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Hoplitoides latefundatus
Zaborski 1987
|
15 specimens | |||||||||
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Cephalopoda
- Ammonitida
- Desmoceratidae
|
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Pachydesmoceras denisonianum
(Stoliczka 1865)
|
14 specimens | |||||||||
| (5 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Nigeria |
| Coordinates: | 6.0° North, 7.5° East (view map) |
| Paleocoordinates: | 7.9° South, 0.7° West |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Turonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Early Turonian | Ammonoid zone: | Mammites nodosoides |
| Age range of interval: | 93.9 - 89.8 m.y. ago |
Stratigraphy
| Formation: | Eze-Aku | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Mammites nodosoides Zone; lower Turonian | |||||
Lithology and environment
| Primary lithology: | black lithified sandy,calcareous "shale" |
| Lithology description: '...In the most northerly of these cuttings 10-12 m of black, weathering sandy yellow, shales with large calcareous nodules contain an ammonite fauna of...' | |
| Environment: | offshore |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | poor |
| Fragmentation: | frequent |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | BMNH |
| Collectors: | Zaborski |
| Collection method comments: specimens in the Department of Paleontology, British Museum (Natural History), London; probably own field collection | |
| Taxonomic list comments:COVERAGE: Limited to ammonoids described in text. NOMENCLATURE: Authoritative publication, with modern nomenclature and species-resolution identifications. | |
Metadata
| Database number: | 69503 | ||
| Authorizer: | M. Aberhan, A. Hendy | Enterer: | S. Nurnberg, A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2007-02-27 04:27:42 | Last modified: | 2009-05-26 17:35:08 |
| Access level: | the public | Released: | 2007-02-27 04:27:42 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 23337. | P. M. P. Zaborski. 1987. Lower Turonian (Cretaceous) ammonites from south-east Nigeria. Bull. Br. Mus. nat. Hist. (Geol.) 41(2):31-66 [M. Aberhan/S. Nurnberg/S. Nurnberg] |
Secondary references:
| 30010 | P. M. P. Zaborski. 1990. Some Upper Cretaceous ammonites from southern Nigeria. Journal of African Earth Sciences 10(3):565-581 [A. Hendy/A. Hendy/O. Alfaro] |