Governor Run, south, Zone 17: Serravallian, Maryland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Echinoidea
- Clypeasteroida
- Abertellidae
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Abertella aberti
(Conrad 1842)
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Uhen 2007 | ||||||
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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
- Platanistidae
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Pomatodelphis inaequalis
Allen 1921
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Godfrey and Lambert 2023 | 1 specimen | |||||
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Zarhachis sp.
Cope 1868
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Uhen 2007 | ||||||
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Mammalia
- Cetacea
- Cetotheriidae
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Cetotherium sp.
Brandt 1843
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Uhen 2007 | ||||||
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Chondrichthyes
- Carcharhiniformes
- Carcharhinidae
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Galeocerdo triqueter
Eastman 1904
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Uhen 2007 | ||||||
| recombined as Physodon triqueter | |||||||
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Malacostraca
- Decapoda
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Cancroidea indet.
Latreille 1802
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Martin 1904 | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Maryland | County: | Calvert |
| Coordinates: | 38.5° North, 76.5° West (view map) | ||||
| Paleocoordinates: | 38.6° North, 73.6° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
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: | Choptank | Member: | Drumcliff |
| Regional section: | Shattuck | Regional bed: | 17 | ||
| Regional order: | bottom to top |
Lithology and environment
| Primary lithology: | yellow sandstone |
| Includes fossils? | Y |
| Lithology description: yellowish sand | |
| Environment: | shoreface |
| Geology comments: Mollusk-dense pale yellow-brown to pale orange well-sorted sand; sub-tropical to temperate, in a current-swept channel-like basin, 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 |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Also known as: | Calvert Beach north, Matoaka Cottages | ||
| Database number: | 70843 | ||
| Authorizer: | M. Uhen | Enterer: | M. Uhen |
| Modifier: | G. Varnham | Research group: | marine invertebrate,vertebrate |
| Created: | 2007-04-09 14:41:37 | Last modified: | 2022-03-03 05:07:59 |
| Access level: | the public | Released: | 2007-04-09 14:41:37 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 23697. | G. B. Shattuck. 1904. Geological and paleontological relations, with a review of earlier investigations. Maryland Geological Survey Miocene Text xxxiii-clv [M. Uhen/M. Uhen] |
Secondary references:
| 29210 | J. W. Durham. 1955. Classification of clypeasteroid echinoids. California University Publications in Geological Sciences 31:73-198 [A. Hendy/A. Hendy] | |
| 85660 | S. J. Godfrey and O. Lambert. 2023. Miocene Toothed Whales (Odontoceti) from Calvert Cliffs, Atlantic Coastal Plain, USA. Smithsonian Contributions to Paleobiology 107:29-186 [M. Uhen/M. Uhen] | |
| 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] | |
| 23767 | G. C. Martin. 1904. Malacostraca. Maryland Geological Survey Miocene(Text):94 [M. Uhen/M. Uhen/M. Uhen] | |
| 24251 | M. D. Uhen. 2007. USNM Chesapeake Group Cetacean Collection Data. [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] |