Also known as B-556
Where: Calvert County, Maryland (38.5° N, 76.5° W: paleocoordinates 38.7° N, 73.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Boston Cliffs Member (Choptank Formation), Serravallian (13.8 - 11.6 Ma)
• STRATIGRAPHIC RELATIONS: From Boston Cliffs Mbr of the Choptank Fm, Chesapeake Grp. AGE: Middle Miocene. STRATIGRAPHIC POSITION: From base of unit 10.
• bed-level stratigraphic resolution
Environment/lithology: coastal; unlithified, fine-grained, shelly/skeletal sandstone
Size class: macrofossils
Collected by Kidwell in 1978; reposited in the YPM
Collection methods: bulk, sieve,
• COLLECTOR: S.K. Kidwell, 1978. REPOSITORY: Peabody Museum of Natural History, Yale University.
Primary reference: S. M. Kidwell. 1982. Stratigraphy, invertebrate taphonomy and depositional history of the Miocene Calvert and Choptank Formations, Atlantic Coastal Plain. Unpublished PhD thesis, Yale University 1-511 [A. Hendy/A. Hendy/A. Hendy]more details
Purpose of describing collection: taphonomic analysis
PaleoDB collection 79112: authorized by Austin Hendy, entered by Austin Hendy on 25.02.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Malacostraca | |
Decapoda indet. Latreille 1802 decapod | |
Thecostraca | |
"Balanus concavus" = Concavus concavus
"Balanus concavus" = Concavus concavus Bronn 1831 barnacle | |
Gastropoda | |
"Turritella plebeia" = Mariacolpus plebeia
"Turritella plebeia" = Mariacolpus plebeia Say 1824 turret shell | |
Crepidula fornicata Linnaeus 1758 slipper shell
Crucibulum sp. Schumacher 1817 slipper shell | |
"Vermetus graniferus" = Serpulorbis granifera
"Vermetus graniferus" = Serpulorbis granifera Say 1824 worm shell | |
Ecphora sp. Conrad 1843 murex snail | |
Calliostoma aphelium Dall 1892 top snail | |
Bivalvia | |
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens Ward and Blackwlder 1975 scallop | |
Isognomon maxillata Lamarck 1819 oyster | |
Anadara sp. Gray 1847 ark | |
Modiolus ducatellii Conrad 1840 mussel
Mytilus incurvus mussel | |
Bicorbula idonea, "Caryocorbula inaequalis" = Corbula inaequalis
Bicorbula idonea Conrad 1833 clam
"Caryocorbula inaequalis" = Corbula inaequalis Say 1824 clam | |
Mercenaria sp., Mercenaria campechiensis, Dosinia acetabulum, Petricola calvertensis, Pitar ? subnasuta, Callista marylandica
Mercenaria campechiensis Gmelin 1791 quahog
Dosinia acetabulum Conrad 1832 venus clam
Petricola calvertensis Dall 1900 venus clam
Pitar ? subnasuta venus clam
Callista marylandica venus clam | |
Spisula subparilis Conrad 1841 clam | |
"Cerastoderma laqueatum" = Chesacardium laqueatum
"Cerastoderma laqueatum" = Chesacardium laqueatum Conrad 1830 cockle | |
Semele ? carinata Conrad 1830 clam | |
"Carditamera protracta" = Cardita protracta
"Carditamera protracta" = Cardita protracta Conrad 1843 clam | |
"Eucrassatella turgidulus" = Marvacrassatella turgidula
"Eucrassatella turgidulus" = Marvacrassatella turgidula Conrad 1843 clam | |
Astarte thisphila Glenn 1904 clam |