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

Also known as YPM-4

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

Reposited in the YPM

Collection methods: bulk, sieve,

• COLLECTOR: Unknown collector. REPOSITORY: YPM. FIDELITY: Moderate ecologic fidelity, unsure if this true bulk sample.

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 Unpublished census data from Atlantic coastal plain and circum-Caribbean Neogene assemblages and taxonomic opinions.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 69024: 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].
Gastropoda
 Trochoidea - Trochidae
Solarium trilineatum Conrad 1841 top snail
 Lepetellida - Fissurellidae
 Sorbeoconcha - Vermetidae
 Neogastropoda - Volutidae
Scaphella virginiana Conrad 1842 volute
 Neogastropoda - Muricidae
Ecphora tricostata Martin 1904 murex snail
 Neotaenioglossa - Calyptraeidae
"Crucibulum costatum" = Crucibulum (Dispotaea) costata, "Calyptraea aperta" = Calyptraea (Trochita) aperta
"Crucibulum costatum" = Crucibulum (Dispotaea) costata Say 1820 slipper shell
"Calyptraea aperta" = Calyptraea (Trochita) aperta Solander 1766 slipper shell
 Cerithioidea - Turritellidae
"Turritella plebeia" = Mariacolpus plebeia, Turritella indenta
"Turritella plebeia" = Mariacolpus plebeia Say 1824 turret shell
Turritella indenta Conrad 1841 turret shell
Bivalvia
 Carditida - Carditidae
Cyclocardia granulata Say 1824 clam
 Carditida - Astartidae
Astarte sp. Sowerby 1816 clam
Astarte cuneiformis Conrad 1840 clam
 Carditida - Crassatellidae
Marvacrassatella melina Conrad 1832 clam
 Pholadida - Corbulidae
Bicorbula idonea, "Caryocorbula inaequalis" = Corbula inaequalis
Bicorbula idonea Conrad 1833 clam
"Caryocorbula inaequalis" = Corbula inaequalis Say 1824 clam
 Cardiida - Veneridae
Melosia staminea Conrad 1838 venus clam
Mercenaria blakei Ward 1992 quahog
 Hiatellida - Hiatellidae
Panopea whitfieldi Dall 1898 clam
 Arcida - Glycymerididae
Glycymeris parilis Conrad 1843 clam
 Arcida - Arcidae
Dallarca subrostrata Conrad 1841 clam
 Ostreida - Pinnidae
 Pectinida - Pectinoidae
"Chesapecten (Chesapecten) coccymelus" = Chesapecten coccymelus
"Chesapecten (Chesapecten) coccymelus" = Chesapecten coccymelus Dall 1898 scallop