Ishiagu (Reyment collection): Late/Upper Albian, Nigeria
collected by R.A. Reyment 1951-1953
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Anisoceratidae
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Anisoceras perarmatum
Pictet and Campiche 1861
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Cephalopoda
- Ammonitida
- Lyelliceratidae
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Stoliczkaia africana
(Pervinquière 1907)
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Cephalopoda
- Ammonitida
- Brancoceratidae
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Mortoniceras (Durnovarites) depressum
(Spath 1922)
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| synonym of Mortoniceras (Subschloenbachia) perinflatum | |||||||
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Mortoniceras (Durnovarites) quadratum
(Spath 1922)
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| synonym of Mortoniceras (Subschloenbachia) perinflatum | |||||||
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Mortoniceras (Durnovarites) levecostatum n. sp.
Reyment 1955
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| synonym of Mortoniceras (Durnovarites) subquadratum | |||||||
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Mortoniceras (Angolaites) gregoryi
(Spath 1922)
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| see common names | |||||||
Geography
| Country: | Nigeria |
| Coordinates: | 6.0° North, 7.6° East (view map) |
| Paleocoordinates: | 9.6° South, 1.7° West |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| Key time interval: | Late/Upper Albian | ||
| Age range of interval: | 106.20000 - 100.50000 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From an unnamed lithostratigraphic unit. AGE: Top of the Late Albian, on the basis of ammonite biostratigraphy; zone 5. STRATIGRAPHIC POSITION: From near the top of the unit. | |||||
Lithology and environment
| Primary lithology: | lithified "shale" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Shale. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | offshore |
| Geology comments: ENVIRONMENT: Presumably an offshore siliciclastic marine facies. | |
Taphonomy
| Modes of preservation: | cast,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils | ||
| Collection methods: | survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | BMNH | ||
| Collectors: | R.A. Reyment | Collection dates: | 1951-1953 |
| Collection method comments: COLLECTOR: R.A. Reyment. REPOSITORY: BMNH. | |||
| Taxonomic list comments:COVERAGE: Exhaustive for Ammonoidea. NOMENCLATURE: Authoritative publication, but with somewhat antiquated nomenclature. Mostly identified to species resolution. | |||
Metadata
| Database number: | 82735 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2008-07-31 19:57:05 | Last modified: | 2020-05-27 23:17:20 |
| Access level: | the public | Released: | 2008-07-31 19:57:05 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27823. | R. A. Reyment. 1955. The Cretaceous Ammonoidea of southern Nigeria and the southern Cameroons. Geological Survey of Nigeria Bulletin 25:1-112 [A. Hendy/A. Hendy] |