Portobello Point, Zones 24: Tortonian, Maryland

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Neogastropoda - Conidae
Conus deluvianus Green 1830
Gastropoda - Neogastropoda - Terebridae
Terebra simplex Conrad 1830
Gastropoda - Neogastropoda - Nassariidae
Bulliopsis quadrata (Conrad 1830)
Nassarius (Tritiaria) peralta (Conrad 1868)
Gastropoda - Neogastropoda - Fasciolariidae
Buccinofusus parilis (Conrad 1832)
Gastropoda - Neogastropoda - Muricidae
Ecphora gardnerae gardnerae Petuch 1988
Gastropoda - Turritellidae
Turritella plebeia plebeia Ward 1992
Turritella subvariabilis subvariabilis Ward 1992
Bivalvia - Pectinida - Pectinidae
Chesapecten santamaria (Tucker 1934)
Bivalvia - Arcida - Arcidae
Dallarca idonea (Conrad 1832)
Bivalvia - Cardiida - Cardiidae
Chesacardium laqueatum laqueatum Ward 1992
Bivalvia - Cardiida - Mactridae
Mactrodesma subponderosa (d'Orbigny 1852)
Bivalvia - Cardiida - Veneridae
Mercenaria tetrica (Conrad 1838)
Lirophora alveata (Conrad 1831)
Dosinia acetabulum thori Ward 1992
Bivalvia - Carditida - Astartidae
Astarte perplana Conrad 1840
see common names

Geography
Country:United States State/province:Maryland County:St. Marys
Coordinates: 38.2° North, 76.5° West (view map)
Paleocoordinates:38.3° North, 74.4° West
Basis of coordinate:estimated from map
Time
Period: Neogene Epoch: Miocene
Stage: Tortonian 10 m.y. bin: Cenozoic 6
Key time interval: Tortonian
Age range of interval: 11.63 - 7.246 m.y. ago
Stratigraphy
Geological group:Chesapeake Formation:Saint Marys Member:Windmill Point
Regional section:Shattuck Regional bed:24
Regional order:bottom to top
Lithology and environment
Primary lithology:very fine argillaceous,silty sandstone
Includes fossils?Y
Environment:marine indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:71636
Authorizer:M. Uhen Enterer:M. Uhen
Research group:vertebrate
Created:2007-05-02 10:52:13 Last modified:2007-05-02 13:52:14
Access level:the public Released:2007-05-02 10:52:12
Creative Commons license:CC BY
Reference information

Primary reference:
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]