Also known as B-546
Where: Calvert County, Maryland (38.4° N, 76.5° W: paleocoordinates 38.6° N, 73.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Drumcliff Member (Choptank Formation), Serravallian (13.8 - 11.6 Ma)
• STRATIGRAPHIC RELATIONS: From Drumcliff Mbr of the Choptank Fm, Chesapeake Grp. AGE: Middle Miocene. STRATIGRAPHIC POSITION: From lower half of unit 4.
• bed-level stratigraphic resolution
Environment/lithology: coastal; unlithified, fine-grained, medium, 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 Unpublished PhD thesis, Yale University 1-511 [A. Hendy/A. Hendy/A. Hendy]more details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 79109: authorized by Austin Hendy, entered by Austin Hendy on 25.02.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Thecostraca | |
Balanus concabvus barnacle | |
Bivalvia | |
Yoldia sp. Möller 1842 clam | |
Nucula ? taphria Dall 1898 nut clam | |
"Megaxinus anodonta" = Stewartia anodonta, "Parvilucina crenulatus" = Parvilucina crenulata
"Megaxinus anodonta" = Stewartia anodonta Say 1824 clam
"Parvilucina crenulatus" = Parvilucina crenulata Conrad 1840 clam | |
"Caryocorbula inaequalis" = Corbula inaequalis, Bicorbula idonea
"Caryocorbula inaequalis" = Corbula inaequalis Say 1824 clam
Bicorbula idonea Conrad 1833 clam | |
Glossus sp. Poli 1795 clam | |
Spisula subparilis Conrad 1841 clam | |
Veneridae indet. Rafinesque 1815 venus clam
? Pitar subnasuta venus clam
Dosinia acetabulum Conrad 1832 venus clam
Mercenaria sp. Schumacher 1817 quahog | |
"Cerastoderma laqueatum" = Chesacardium laqueatum
"Cerastoderma laqueatum" = Chesacardium laqueatum Conrad 1830 cockle | |
Semele ? carinata Conrad 1830 clam | |
Astarte thisphila Glenn 1904 clam | |
Cyclocardia granulata Say 1824 clam | |
"Eucrassatella turgidulus" = Marvacrassatella turgidula
"Eucrassatella turgidulus" = Marvacrassatella turgidula Conrad 1843 clam | |
Modiolus sp. Lamarck 1801 mussel | |
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens Ward and Blackwlder 1975 scallop | |
"Anadara staminea" = Dallarca staminea
"Anadara staminea" = Dallarca staminea Say 1832 clam | |
Gastropoda | |
Calliostoma sp. Swainson 1840 top snail
? Calliostoma sp. Swainson 1840 top snail | |
Ecphora sp. Conrad 1843 murex snail | |
"Lunatia heros" = Euspira heros
"Lunatia heros" = Euspira heros Say 1822 moon snail | |
"Turritella plebeia" = Mariacolpus plebeia
"Turritella plebeia" = Mariacolpus plebeia Say 1824 turret shell | |
Crucibulum sp. Schumacher 1817 slipper shell | |
"Scala sp." = Epitonium (Scala)
"Scala sp." = Epitonium (Scala) Humphrey wentletrap |