Parker Creek, south, Zone 17 (Miocene of the United States)

Where: Calvert County, Maryland (38.5° N, 76.5° W: paleocoordinates 38.7° N, 73.7° W)

• coordinate estimated from map

When: Drumcliff Member (Choptank Formation), Serravallian (13.8 - 11.6 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shoreface; yellow sandstone

• Mollusk-dense pale yellow-brown to pale orange well-sorted sand; sub-tropical to temperate, in a current-swept channel-like basin
• yellow sand

Size class: macrofossils

Preservation: original phosphate

Reposited in the USNM

Collection methods: surface (in situ),

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 70830: authorized by Mark Uhen, entered by Mark Uhen on 09.04.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cerithioidea - Turritellidae
"Turritella plebeia" = Mariacolpus plebeia
"Turritella plebeia" = Mariacolpus plebeia Say 1824 turret shell
subspecies plebeia
 Neogastropoda - Muricidae
Ecphora quadricostata Conrad 1830 murex snail
Ecphora meganae2 Ward and Gilinsky 1988 murex snail
subspecies meganae
Bivalvia
 Arcida - Arcidae
Dallarca elnia2, "Arca staminea" = Dallarca staminea
Dallarca elnia2 Glenn 1904 clam
"Arca staminea" = Dallarca staminea Say 1832 clam
 Pectinida - Pectinoidae
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens2, "Pecten madisonius" = Chesapecten madisonius, "Pecten coccymelus" = Chesapecten coccymelus
"Chesapecten nefrens" = Chesapecten (Chesapecten) nefrens2 Ward and Blackwlder 1975 scallop
"Pecten madisonius" = Chesapecten madisonius Say 1824 scallop
"Pecten coccymelus" = Chesapecten coccymelus Dall 1898 scallop
 Ostreida - Malleidae
Isognomon sp.2, "Melina maxillata" = Isognomon maxillata
Isognomon sp.2 Lightfoot 1786 oyster
"Melina maxillata" = Isognomon maxillata Lamarck 1819 oyster
 Lucinida - Lucinidae
Stewartia anodonta2 Say 1824 clam
 Pholadida - Corbulidae
"Corbula cuneata" = Caryocorbula cuneata, "Corbula idonea" = Bicorbula idonea, "Bicorbula idonea" = Bicorbula idonea2
"Corbula cuneata" = Caryocorbula cuneata Say 1824 clam
"Corbula idonea" = Bicorbula idonea Conrad 1833 clam
"Bicorbula idonea" = Bicorbula idonea2 Conrad 1833 clam
 Cardiida - Glossidae
Glossus marylandica2, "Isocardia fraterna" = Glossus fraterna
Glossus marylandica2 Schoonover 1941 clam
"Isocardia fraterna" = Glossus fraterna Say 1824 clam
 Cardiida - Veneridae
Macrocallista marylandica Conrad 1833 venus clam
Dosinia acetabulum Conrad 1832 venus clam
subspecies blackwelderi
Mercenaria cuneata2 Conrad 1869 quahog
"Venus campechiensis" = Mercenaria campechiensis Gmelin 1791 quahog
var. cuneata
"Venus mercenaria" = Mercenaria mercenaria Linnaeus 1758 quahog
 Cardiida - Cardiidae
"Cardium laqueatum" = Chesacardium laqueatum, "Chesacardium laqueatum" = Chesacardium laqueatum2
"Cardium laqueatum" = Chesacardium laqueatum Conrad 1830 cockle
"Chesacardium laqueatum" = Chesacardium laqueatum2 Conrad 1830 cockle
subspecies blackwelderi
 Cardiida - Tellinidae
"Metis biplicata" = Florimetis biplicata
"Metis biplicata" = Florimetis biplicata Conrad 1834 tellin clam
 Hiatellida - Hiatellidae
Panopea americana Conrad 1838 clam
 Carditida - Astartidae
Astarte thisphila Glenn 1904 clam
 Carditida - Crassatellidae
"Crassatellites turgidulus" = Marvacrassatella turgidula, "Marvacrassatella turgidula" = Marvacrassatella turgidula2
"Crassatellites turgidulus" = Marvacrassatella turgidula Conrad 1843 clam
"Marvacrassatella turgidula" = Marvacrassatella turgidula2 Conrad 1843 clam
Echinoidea
 Spatangoida - Loveniidae
Echinocardium marylandiense1 Kier 1972 heart urchin
Mammalia
 Carnivora - Mustelidae
Mustelidae indet.1 Fischer 1817 mustelid carnivore
possibly from Zone 19