USGS Loc. 26417 - Warren Brothers pits [Yorktown Fm]: Late/Upper Pliocene, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Neogastropoda
- Muricidae
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Ecphora quadricostata
(Conrad 1830)
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Ward 1992 | |||||||||
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Bivalvia
- Pectinida
- Pectinidae
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Chesapecten madisonius
(Say 1824)
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea sculpturata
Conrad 1840
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| recombined as Conradostrea sculpturata | ||||||||||
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Conradostrea sculpturata
(Conrad 1840)
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Ward 1992 | |||||||||
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Bivalvia
- Arcida
- Glycymerididae
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Costaglycymeris subovata
(Say 1824)
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Ward 1992 | |||||||||
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Bivalvia
- Cardiida
- Chamidae
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Chama congregata
Conrad 1833
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Bivalvia
- Cardiida
- Veneridae
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Dosinia acetabulum
(Conrad 1832)
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Ward 1992 | |||||||||
| subspecies acetabulum | ||||||||||
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Mercenaria tridacnoides
(Lamarck 1818)
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Ward 1992 | |||||||||
| recombined as Mercenaria campechiensis tridacnoides | ||||||||||
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Bivalvia
- Hiatellida
- Hiatellidae
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Panopea reflexa
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Ward 1992 | |||||||||
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Bivalvia
- Carditida
- Crassatellidae
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Marvacrassatella undulata
|
Ward 1992 | |||||||||
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Bivalvia
- Carditida
- Carditidae
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Cyclocardia granulata
(Say 1824)
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Ward 1992 | |||||||||
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Bivalvia
- Carditida
- Astartidae
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Astarte undulata
Say 1824
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Ward 1992 | |||||||||
| recombined as Astarte (Ashtarotha) undulata | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Virginia | County: | Henrico |
| Coordinates: | 37.5° North, 77.2° West (view map) | ||||
| Paleocoordinates: | 37.6° North, 76.5° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Altitude: | 15 meters | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Neogene | Epoch: | Pliocene |
| Stage: | Piacenzian | 10 m.y. bin: | Cenozoic 6 |
| Key time interval: | Late/Upper Pliocene | ||
| Age range of interval: | 3.60000 - 2.58000 m.y. ago |
Stratigraphy
| Geological group: | Chesapeake | Formation: | Yorktown | Member: | Rushmere |
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: 10 feet thick bed | |||||
Lithology and environment
| Primary lithology: | fine,shelly/skeletal,gray,blue unlithified sandstone | ||
| Includes fossils? | Y | ||
| Lithology description: Sand, grayish-orange (5 Y 8/4), weathered, fine, very shelly | |||
| Environment: | coastal indet. | Tectonic setting: | passive margin |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Abundance in sediment: | abundant |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | observed (not collected) |
| Reason for describing collection: | biostratigraphic analysis |
| Museum repositories: | USGS |
Metadata
| Database number: | 60660 | ||
| Authorizer: | A. Miller, M. Uhen | Enterer: | D. Buick, M. Uhen |
| Modifier: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2006-05-19 10:05:42 | Last modified: | 2014-05-03 20:33:33 |
| Access level: | the public | Released: | 2006-05-19 10:05:42 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 17420. | L. W. Ward. 1985. Stratigraphy and Characteristic Mollusks of the Pamunkey Group (Lower Tertiary) and the Old Church Formation of the Chesapeake Group-Virginia Coastal Plain. United States Geological Survey Professional Paper (1346)1-77 [A. Miller/D. Buick] |
Secondary references:
| 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] |