USGS Loc. 25309 - Urbana Creek [Cobham Bay Mbr, Eastover Fm]: Tortonian, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Thecostraca
- Balanomorpha
- Balanidae
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Chesaconcavus sp.
Zullo 1992
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Chesaconcavus proteus
(Conrad 1834)
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Chesaconcavus myosulcatus
Zullo 1992
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Paraconcavus neusensis
(Zullo and Miller 1986)
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Virginia | County: | Middlesex |
| Coordinates: | 37.6° North, 76.6° West (view map) | ||||
| Paleocoordinates: | 37.8° North, 74.6° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Tortonian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Tortonian | ||
| Age range of interval: | 11.63000 - 7.24600 m.y. ago |
Stratigraphy
| Geological group: | Chesapeake | Formation: | Eastover | Member: | Cobham Bay |
| Regional section: | Shattuck | Regional bed: | 26 | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Urbana Creek, Middlesex; Upper Miocene (Tortonian), Cobham Bay Mbr, Eastover Formation. From beach to 1.0 m above beach. | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal calcareous sandstone |
| Includes fossils? | Y |
| Lithology description: Sandstone, with heavily calcified barnacle/mollusk shell hashes. | |
| Environment: | offshore |
| Glacial or sequence phase: | transgressive |
| Geology comments: Open shelf conditions | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USGS |
| Collection method comments: Collected from individuals specimens. | |
| Taxonomic list comments:Exhaustive for Cirripdia. Not complete with respect to molluscan fauna. Type material is reposited in USNM, ANSP, and University of North Carolina, Wilmington. | |
Metadata
| Also known as: | Kline Loc. 502 | ||
| Database number: | 51719 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2005-06-14 11:57:14 | Last modified: | 2014-08-16 21:46:51 |
| Access level: | the public | Released: | 2005-06-14 11:57:14 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 13777. | 1% 2380 | D. B. Kline. 1997. Systematics and biostratigraphy of Miocene Cirripedia of the Chesapeake Group; Maryland, North Carolina, and Virginia. Unpublished Masters thesis, University of North Carolina, Wilmington [A. Miller/A. Hendy/A. Hendy] |
Secondary references:
| 52284 | V. A. Zullo. 1992. Revision of the balanid barnacle genus Concavus Newman, 1982, with the description of a new subfamily, two new genera, and eight new species. The Paleontological Society Memoir 27:1-46 [A. Hendy/A. Hendy] |