853.0 m, Gorgo-A-Cerbara section (Maiolica Fm): Barremian, Italy
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Macroscaphitidae
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Costidiscus cf. recticostatus
(d'Orbigny 1840)
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| recombined as Macroscaphites (Costidiscus) recticostatus | |||||||
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Cephalopoda
- Ammonitida
- Pulchelliidae
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Heinzia ex gr. provincialis
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| spelled with current rank as Pulchellia (Heinzia) | |||||||
| see common names | |||||||
Geography
| Country: | Italy |
| Coordinates: | 43.6° North, 12.5° East (view map) |
| Paleocoordinates: | 28.3° North, 19.0° East |
| Basis of coordinate: | based on nearby landmark |
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| Stage: | Barremian | 10 m.y. bin: | Cretaceous 2 |
| Key time interval: | Barremian | ||
| Age range of interval: | 125.77000 - 121.40000 m.y. ago |
Stratigraphy
| Formation: | Maiolica | ||||
| Local section: | Gorgo A Cerbara | Local bed: | 853.0 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: SPECIFIC STRATIGRAPHY: lowermost Upper Barremian, A. vandenheckei Zone.
GENERAL STRATIGRAPHY: The lower Cretaceous in the Umbria-Marche region is represented by two formations: (1) the Maiolica Fm (late Tithonian to early Aptian) consisting of limestones; and (2) the Scisti a Fucoidi Fm (early Aptian to Albian) consisting of marls. The lithologic boundary between the two fms is gradational and is placed at the uppermost black chert at the top of the Maiolica limestones. The section is numbered bed by bed starting from the base of Scisti a Fucoidi Fm downward through the Maiolica. The beds also carry metre level names. | |||||
Lithology and environment
| Primary lithology: | concretionary,white lithified cherty/siliceous "limestone" |
| Includes fossils? | Y |
| Lithology description: White, pelagic limestone with chert lenses and nodules and scattered black shales in upper parts. | |
| Environment: | carbonate indet. |
| Geology comments: Pelagic limestones. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | bulk,selective quarrying,field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Collection method comments: Data appears to have been recently collected by authors. Nannofossils and foraminifera presumably collected by bulk means. | |
| Taxonomic list comments:Exhaustive for depauperate ammonite fauna. Nannofossil and foraminiferal assemblages not necessarily entered. | |
Metadata
| Database number: | 50805 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2005-05-23 09:26:11 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2005-05-23 09:26:11 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 13572. | F. Cecca, G. Pallini, E. Erba, I. Permoli-Silva, and R. Coccioni. 1994. Hauterivian-Barremian chronostratigraphy based on ammonites, nannofossils, planktonic foraminifera and magnetic chrons from the Mediterranean domain. Cretaceous Research 15:457-467 [A. Miller/A. Hendy/A. Hendy] |