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
Balanus imitator Zullo 1984
Concavus crassostricola Zullo 1984
Bivalvia - Ostreida - Gryphaeidae
Pycnodonte percrassa (Conrad 1840)
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% 2380D. 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 Unpublished Masters thesis, University of North Carolina, Wilmington [A. Miller/A. Hendy/A. Hendy]