Annopol mine, unit 5: Early/Lower Cenomanian - Middle Cenomanian, Poland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Nautilida
- Nautilidae
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Eutrephoceras bouchardianum
(d'Orbigny 1840)
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| (2 measurements) | ||||||||||
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Cymatoceras deslongchampsianum
(d'Orbigny 1840)
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| (2 measurements) | ||||||||||
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Cymatoceras tourtiae
(Schluter 1876)
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| (3 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Poland |
| Coordinates: | 50.9° North, 21.9° East (view map) |
| Paleocoordinates: | 40.7° North, 19.7° East |
| Basis of coordinate: | estimated from map |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Cenomanian | 10 m.y. bin: | Cretaceous 5 |
| Key time interval: | Early/Lower Cenomanian - Middle Cenomanian | ||
| Age range of interval: | 100.50000 - 93.90000 m.y. ago |
Stratigraphy
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: According to Marcinowski and Walaszczyk (1985), the ammonite assemblage from this level is composed of numerous lower Cenomanian taxa plus those characteristic of the middle Cenomanian Acanthoceras rhotomagense Zone (with mixed elements of both the Turrilites costatus and T. acutus subzones). Foraminiferal assemblages include the planktonic Rotalipora cushmani, which is a middle to early late Cenomanian form and is compatible with the ammonite-based dating of this unit (Walaszczyk 1987). Given the age-range of the associated ammonites, which are preserved as mineralised moulds, the studied nautilid material is best considered as early to/or middle Cenomanian in age. | |||||
Lithology and environment
| Primary lithology: | burrows,hardground,glauconitic,phosphatic lithified marl |
| Lithology description: Restricted to the glauconitic marls infilling large burrows and cavities in the underlying lower Cenomanian limestone. Both burrow infillings and intervening hummocks of the lower Cenomanian limestone are truncated by a complex nodular hardground with strong phosphate and glauconite impregnation. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | mold/impression,replaced with phosphate |
| Size of fossils: | macrofossils |
| Temporal resolution: | condensed |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Repository: Instutute of Paleobiology of the Polish Academy of Sciences, Warszawa (abbreviated ZPAL N.III) | |
Metadata
| Database number: | 175630 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2015-12-22 23:49:54 | Last modified: | 2015-12-22 23:49:54 |
| Access level: | the public | Released: | 2015-12-22 23:49:54 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 57469. | M. Machalski and M. Wilmsen. 2015. Taxonomy and taphonomy of Cenomanian (Upper Cretaceous) nautilids from Annopol, Poland. Acta Geologica Polonica 65:495-506 [M. Clapham/M. Clapham] |