Also known as B-543
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 unit 2.
• 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 Unpublished PhD thesis, Yale University 1-511 [A. Hendy/A. Hendy/A. Hendy]more details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 79106: authorized by Austin Hendy, entered by Austin Hendy on 25.02.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Echinoidea | |
Abertella aberti Conrad 1842 sand dollar | |
Chondrichthyes | |
Myliobatis sp. Cuvier 1816 eagle ray | |
Lingulata | |
Discinisca lugubris Conrad 1834 | |
Bryozoa | |
Bryozoa indet. Ehrenberg 1831 | |
Scaphopoda | |
Cadulus newtonensis Meyer and Aldrich 1886 tusk shell | |
Gastropoda | |
Calliostoma cf. humile Conrad 1830 top snail
Calliostoma philanthropus Conrad 1834 top snail | |
"Turritella plebeia" = Mariacolpus plebeia
"Turritella plebeia" = Mariacolpus plebeia Say 1824 turret shell | |
""Scala" sp." = Epitonium (Scala)
""Scala" sp." = Epitonium (Scala) Humphrey wentletrap | |
Ecphora sp. Conrad 1843 murex snail | |
Bivalvia | |
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens Ward and Blackwlder 1975 scallop | |
Isognomon maxillata Lamarck 1819 oyster | |
"Anadara staminea" = Dallarca staminea
"Anadara staminea" = Dallarca staminea Say 1832 clam | |
"Cerastoderma laqueatum" = Chesacardium laqueatum
"Cerastoderma laqueatum" = Chesacardium laqueatum Conrad 1830 cockle | |
Semele sp. Schumacher 1817 clam | |
Dosinia acetabulum, Mercenaria sp., Mercenaria campechiensis, ? Pitar subnasuta, ? Callista marylandica
Dosinia acetabulum Conrad 1832 venus clam
Mercenaria sp. Schumacher 1817 quahog
Mercenaria campechiensis Gmelin 1791 quahog
? Pitar subnasuta venus clam
? Callista marylandica venus clam | |
Spisula subparilis Conrad 1841 clam | |
Bicorbula idonea, "Caryocorbula inaequalis" = Corbula inaequalis
Bicorbula idonea Conrad 1833 clam
"Caryocorbula inaequalis" = Corbula inaequalis Say 1824 clam | |
"Parvilucina crenulatus" = Parvilucina crenulata
"Parvilucina crenulatus" = Parvilucina crenulata Conrad 1840 clam | |
Malacostraca | |
Decapoda indet. Latreille 1802 decapod | |
Thecostraca | |
"Balanus concavus" = Concavus concavus
"Balanus concavus" = Concavus concavus Bronn 1831 barnacle |