UC bulk sample [Plum Point Marl, Calvert Fm] (Miocene of the United States)

Where: Calvert County, Maryland (38.6° N, 76.5° W: paleocoordinates 38.8° N, 73.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Plum Point Member (Calvert Formation), Langhian (16.0 - 13.8 Ma)

• STRATIGRAPHIC RELATIONS: From Plum Point Mbr of the Calvert Fm, Chesapeake Grp. AGE: Middle Miocene. STRATIGRAPHIC POSITION: Unknown position within member.

• bed-level stratigraphic resolution

Environment/lithology: coastal; unlithified, coarse-grained, shelly/skeletal, sandy marl

• ENVIRONMENT: Shallow-marine, restricted/sheltered, fine-grained siliciclastic environment.
• SPECIFIC LITHOLOGY: Coarse sandy marl, shelly. LITHIFICATION: Unlithified, based on observation of specimens.

Size class: macrofossils

Preservation: original aragonite

Collection methods: bulk, sieve,

• COLLECTOR: Presumably K. Castor, 1960's. REPOSITORY: Department of Geology, University of Cincinnati.

Primary reference: A. J. W. Hendy, D. P. Buick, K. V. Bulinski, C. A. Ferguson, and A. I. Miller. 2008. Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions. [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 69023: authorized by Austin Hendy, entered by Austin Hendy on 15.02.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• TAXONOMY: Identified by A. Hendy; nomenclature based on revision of Gardner (1943) [PBDB Ref# 16984]and Ward (1992) [16985].
Bivalvia
 Arcida - Arcidae
Dallarca subrostrata Conrad 1841 clam
 Pectinida - Pectinoidae
Chesapecten (Chesapecten) nefrens Ward and Blackwlder 1975 scallop
 Pholadida - Myidae
"Mya cf. arenaria" = Mya (Arenomya) arenaria
"Mya cf. arenaria" = Mya (Arenomya) arenaria Linnaeus 1758 softshell clam
 Pholadida - Corbulidae
Varicorbula elevata Conrad 1838 clam
 Pholadida - Pholadidae
Barnea sp. Leach 1826 clam
 Cardiida - Solecurtidae
Tagelus sp. Gray 1847 clam
 Cardiida - Veneridae
"Dosinia (Dosinidia) acetabulum" = Dosinia acetabulum, Mercenaria blakei
"Dosinia (Dosinidia) acetabulum" = Dosinia acetabulum Conrad 1832 venus clam
Mercenaria blakei Ward 1992 quahog
 Cardiida - Mactridae
"Spisula" subcuneata Conrad 1838 clam
 Solenida - Pharidae
Ensis ensiformis Conrad 1843 clam
 Pandorida - Pandoridae
Pandora sp. Bruguière 1797 clam
Gastropoda
 Cerithioidea - Turritellidae
"Turritella plebeia" = Mariacolpus plebeia, Turritella exaltata
"Turritella plebeia" = Mariacolpus plebeia Say 1824 turret shell
Turritella exaltata Conrad 1841 turret shell
 Sorbeoconcha - Naticidae
Euspira cf. heros Say 1822 moon snail
Neverita duplicatus Say 1822 moon snail
 Neogastropoda - Columbellidae
Columbellidae indet. Swainson 1840 snail
 Neogastropoda - Melongenidae
 Neogastropoda - Nassariidae
 Neogastropoda - Cancellariidae
Cancellaria sp. Lamarck 1799 snail
 Neogastropoda - Turridae
Turridae indet. Swainson 1840 turrid
 Neogastropoda - Conidae
Conus deluvianus Green 1830 cone shell
 Neogastropoda - Terebridae
"Terebra cf. simplex" = Laevihastula simplex
"Terebra cf. simplex" = Laevihastula simplex Conrad 1830 auger snail
 Neogastropoda - Muricidae
Muricidae indet. Rafinesque 1815 murex snail
"Typhis" acuticosta Conrad 1830 murex snail
 Neotaenioglossa - Calyptraeidae
"Crucibulum costatum" = Crucibulum (Dispotaea) costata Say 1820 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell