Horsehead Cliffs, Zone 14: Serravallian, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Acipenseriformes
- Acipenseridae
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Acipenser sp.
Linnaeus 1758
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1 specimen | ||||||
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Mammalia
- Carnivora
- Phocidae
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Leptophoca lenis
True 1906
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Koretsky 2001 | ||||||
| synonym of Leptophoca proxima | |||||||
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Mammalia
- Cetacea
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Parietobalaena palmeri
Kellogg 1924
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1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Virginia | County: | Westmoreland |
| Coordinates: | 38.2° North, 76.9° West (view map) | ||||
| Paleocoordinates: | 38.4° North, 74.0° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Neogene | Epoch: | Miocene |
| Stage: | Serravallian | 10 m.y. bin: | Cenozoic 5 |
| Key time interval: | Serravallian | ||
| Age range of interval: | 13.82000 - 11.63000 m.y. ago |
Stratigraphy
| Geological group: | Chesapeake | Formation: | Calvert | Member: | Calvert Beach |
| Regional section: | Shattuck | Regional bed: | 14 | ||
| Regional order: | bottom to top | ||||
| Stratigraphy comments: Zones 14-16A are regarded as Serravallian in age. | |||||
Lithology and environment
| Primary lithology: | diatomaceous,gray,blue claystone |
| Includes fossils? | Y |
| Lithology description: blue-gray diatomaceous clay | |
| Environment: | foreshore |
| Geology comments: sparse molluscs, low in diversity; subtropical environment in embayment and dry onshore; area not far from shore, bay, short-term eustatic transgression events, long-term regression trend
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Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Associated major elements: | some |
| Disassociated major elements: | some |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Also known as: | Westmoreland State Park | ||
| Database number: | 71806 | ||
| Authorizer: | M. Uhen | Enterer: | M. Uhen |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2007-05-10 15:07:39 | Last modified: | 2022-03-03 05:34:06 |
| Access level: | the public | Released: | 2007-05-10 15:07:39 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 24251. | M. D. Uhen. 2007. USNM Chesapeake Group Cetacean Collection Data. [M. Uhen/M. Uhen] |
Secondary references:
| 17253 | I. Koretsky. 2001. Morphology and systematics of Miocene Phocinae (Mammalia: Carnivora) from Paratethys and the North Atlantic region. Geologica Hungarica Series Palaeontologica 54:1-109 [M. Uhen/M. Uhen] | |
| 32709 | L. W. Ward and G. W. Andrews. 2008. Stratigraphy of the Calvert, Choptank, and St. Marys Formations (Miocene) in the Chesapeake Bay Area, Maryland and Virginia. Virginia Museum of Natural History Memoir 1-169 [M. Uhen/M. Uhen] |