Locality 401 (Plum Point Marl, Calvert Fm), Zone 10: Langhian, Maryland
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Thecostraca
- Balanomorpha
- Balanidae
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Balanus imitator
Zullo 1984
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Concavus crassostricola
Zullo 1984
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Bivalvia
- Ostreida
- Gryphaeidae
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Pycnodonte percrassa
(Conrad 1840)
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see common names |
Geography
Country: | United States | State/province: | Maryland | County: | Calvert |
Coordinates: | 38.6° North, 76.5° West (view map) | ||||
Paleocoordinates: | 38.8° North, 73.2° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | outcrop |
Time
Period: | Neogene | Epoch: | Miocene |
Stage: | Langhian | 10 m.y. bin: | Cenozoic 5 |
Key time interval: | Langhian | ||
Age range of interval: | 15.97000 - 13.82000 m.y. ago |
Stratigraphy
Geological group: | Chesapeake | Formation: | Calvert | Member: | Plum Point |
Regional section: | Shattuck | Regional bed: | 10 | ||
Regional order: | bottom to top | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: Middle Miocene (Langhian), Plum Point Marl, Calvert Formation, Zone 10. Samples taken from oyster lens approximately 1.5 below base of section.
Zone 10 corresponds to Bed B which is Langhian or Barstovian NALMA |
Lithology and environment
Primary lithology: | unlithified siltstone |
Secondary lithology: | sandstone |
Includes fossils? | Y |
Includes fossils? | Y |
Lithology description: Siltstone, sandstone and clay | |
Environment: | marginal marine indet. |
Geology comments: Restricted marine environment. |
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 |
Collection method comments: Collected from bulk samples. | |
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
Database number: | 51724 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | G. Varnham | Research group: | marine invertebrate |
Created: | 2005-06-14 13:52:58 | Last modified: | 2022-03-03 04:14:11 |
Access level: | group members | Released: | 2006-06-14 13:52:58 |
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] |