Between Indawfia and Umpuna, Awka: Middle Albian, Nigeria
collected by Kitson
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Mojsisovicsiidae
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Dipoloceras sp.
Hyatt 1900
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Dipoloceras aff. cristatum
(Brongniart 1822)
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Cephalopoda
- Ammonitida
- Brancoceratidae
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Hysteroceras sp.
Hyatt 1900
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| see common names | |||||||
Geography
| Country: | Nigeria |
| Coordinates: | 6.4° North, 8.2° East (view map) |
| Paleocoordinates: | 8.7° South, 1.3° 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: | Middle Albian | Ammonoid zone: | Dipoloceras cristatum |
| Age range of interval: | 109.90000 - 106.20000 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: STRATIGRAPHIC RELATIONS: From unknown lithostratigraphic unit. AGE: Top of Middle Albian, Zone 2, on the basis of ammonite biostratigraphy; Dipoloceras cristatum zone. STRATIGRAPHIC POSITION: From near middle of the formation, zone 2. | |||||
Lithology and environment
| Primary lithology: | lithified argillaceous "limestone" |
| Includes fossils? | Y |
| Lithology description: SPECIFIC LITHOLOGY: Similar yellowish limestone (previous similar locality was an argillaceous limestone) with an unctuous, pinkish, weathered crust. LITHIFICATION: Lithified, on the basis of figured specimens. | |
| Environment: | carbonate indet. |
| Geology comments: ENVIRONMENT: Offshore marine siliciclastic setting. | |
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: | Kitson |
| Collection method comments: COLLECTOR: A. Kitson. REPOSITORY: BMNH. | |
| Taxonomic list comments:COVERAGE: Exhaustive for Ammonoidea. NOMENCLATURE: Authoritative publication, but with somewhat antiquated nomenclature. Mostly identified to species resolution. | |
Metadata
| Also known as: | Ndi Ofia | ||
| Database number: | 82769 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2008-08-01 10:13:50 | Last modified: | 2020-05-28 23:22:57 |
| Access level: | the public | Released: | 2008-08-01 10:13:50 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 72493. | L. F. Spath. 1928. The Albian Ammonoidea of Nigeria. The Nigerian Coalfield. Section II. Parts of Onitsha and Owerri Provinces. Geological Survey of Nigeria Bulletin 12:51-54 [M. Clapham/M. Clapham] |
Secondary references:
| 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] |