Molluscan Zone 6, Sunken Meadow Mbr, Yorktown Fm - Sunken Meadow Creek: Early/Lower Pliocene, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Arcida
- Glycymerididae
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Costaglycymeris subovata
(Say 1824)
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea compressirostra
Say 1824
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| Subspecies: O. compressirostra compressirostra | ||||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Chesapecten clintonius
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Chesapecten jeffersonius
(Say 1824)
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Bivalvia
- Carditida
- Crassatellidae
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Marvacrassatella cyclopterus
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Bivalvia
- Carditida
- Astartidae
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Astarte vaginulata
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Bivalvia
- Carditida
- Carditidae
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Cyclocardia granulata
(Say 1824)
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Bivalvia
- Lucinida
- Lucinidae
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Stewartia anodonta
(Say 1824)
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Lucinoma contracta
(Say 1824)
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Bivalvia
- Pholadida
- Teredinidae
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Kuphus fistula
(Lea 1843)
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Bivalvia
- Cardiida
- Veneridae
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Mercenaria inflata
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Bivalvia
- Cardiida
- Glossidae
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Glossus fraterna
(Say 1824)
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea reflexa
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Gastropoda
- Turritellidae
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Turritella pilsbryi
Gardner 1928
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Gastropoda
- Neogastropoda
- Conidae
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Conus marylandicus
Green 1830
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| [entered as Conus marylandica] | ||||||||||
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Gastropoda
- Neogastropoda
- Muricidae
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Ecphora quadricostata
(Conrad 1830)
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Virginia | County: | Surry |
| Coordinates: | 37.2° North, 76.9° West (view map) | ||||
| Paleocoordinates: | 37.3° North, 76.0° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Pliocene |
| Stage: | Zanclean | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Early/Lower Pliocene | ||
| Age range of interval: | 5.33300 - 3.60000 m.y. ago |
Stratigraphy
| Formation: | Yorktown | Member: | Sunken Meadow | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Unit C in Ward 1992 (Fig. 11), ~2.0 m of sand. Collection from Sunken Meadow Mbr of Yorktown Fm, which overlies a thin unit of Cobham Bay Mbr, Eastover Fm and underlies the Rushmere Mbr of the Yorktown Fm. | |||||
Lithology and environment
| Primary lithology: | shelly/skeletal unlithified sandstone |
| Includes fossils? | Y |
| Lithology description: Sand, shelly, fine. | |
| Environment: | coastal indet. |
| Geology comments: No geologic or environmental data provided in text. Presumably accumulated during a successive transgression following post Eastover Fm regression. Appears to contain a normal marine fauna. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection,survey of museum collection |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | USNM |
| Collection method comments: Most material appears to be reposited in USNM and USGS collections | |
| Taxonomic list comments:Probably not exhaustive, but a summary of the common and abundant forms from unit. Modern nomenclature utilized with species level assignments. | |
Metadata
| Database number: | 59297 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2006-03-25 11:53:35 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2006-03-25 11:53:35 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 16985. | L. W. Ward. 1992. Molluscan biostratigraphy of the Miocene Middle Atlantic Coastal Plain of North America. Virginia Museum of Natural History 2 [A. Miller/A. Hendy] |