Flag Ponds, Zone 19: Serravallian, Maryland

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Thecostraca - Balanomorpha - Balanidae
Balanus concavus Bronn 1831
Gastropoda - Turritellidae
Turritella terebriformis Conrad 1863
Ward 1992
Turritella plebeia plebeia Ward 1992
Ward 1992
Gastropoda - Neogastropoda - Muricidae
Ecphora meganae williamsi Ward and Gilinsky 1988
Ward 1992
Bivalvia - Pectinida - Pectinidae
Pecten madisonius Say 1824
Chesapecten nefrens Ward and Blackwlder 1975
Ward 1992
Chesapecten monicae Ward 1992
Ward 1992
Bivalvia - Ostreida - Ostreidae
Ostrea carolinensis Conrad 1832
Bivalvia - Ostreida - Malleidae
Isognomon (Hippochaeta) sp. ()
Ward 1992
Bivalvia - Arcida - Arcidae
Dallarca elevata
Ward 1992
Arca staminea Say 1832
Bivalvia - Cardiida - Veneridae
Macrocallista marylandica (Conrad 1833)
Mercenaria cuneata Conrad 1869
Ward 1992
Dosinia acetabulum blackwelderi Ward 1992
Pleiorytis calvertensis (Dall 1900)
Ward 1992
Clementia inoceriformis (Wagner 1839)
Ward 1992
Bivalvia - Cardiida - Glossidae
Glossus marylandica (Schoonover 1941)
Ward 1992
Bivalvia - Cardiida - Cardiidae
Cardium laqueatum Conrad 1830
Chesacardium laqueatum vostreysi Ward 1992
Ward 1992
Bivalvia - Cardiida - Tellinidae
Florimetis biplicata (Conrad 1834)
Ward 1992
Bivalvia - Pholadida - Corbulidae
Corbula idonea Conrad 1833
Bicorbula idonea (Conrad 1833)
Ward 1992
Bivalvia - Hiatellida - Hiatellidae
Panopea americana (Conrad 1838)
Ward 1992
Bivalvia - Lucinida - Lucinidae
Lucinoma contracta (Say 1824)
Ward 1992
Stewartia anodonta (Say 1824)
Ward 1992
Phacoides anodonata
Bivalvia - Carditida - Astartidae
Astarte obruta Conrad 1834
Ward 1992
Astarte thisphila Glenn 1904
Bivalvia - Carditida - Crassatellidae
Marvacrassatella marylandica (Conrad 1832)
Ward 1992
Crassatellites marylandica
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: 13.82 - 11.63 m.y. ago
Stratigraphy
Geological group:Chesapeake Formation:Choptank Member:Boston Cliffs
Regional section:Shattuck Regional bed:19
Regional order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Formerly Calvert Formation
Lithology and environment
Primary lithology: sandy claystone
Includes fossils?Y
Lithology description: sandy clay
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:70846
Authorizer:M. Uhen Enterer:M. Uhen
Modifier:G. Varnham Research group:marine invertebrate,vertebrate
Created:2007-04-09 14:49:30 Last modified:2022-03-03 05:04:53
Access level:the public Released:2007-04-09 14:49:30
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:

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]