Locality 401 (Plum Point Marl, Calvert Fm), Zone 10 (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

• outcrop-level geographic resolution

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

• Middle Miocene (Langhian), Plum Point Marl, Calvert Formation, Zone 10. Samples taken from oyster lens approximately 1.5 below base of section.

•Zone 10 corresponds to Bed B which is Langhian or Barstovian NALMA

• bed-level stratigraphic resolution

Environment/lithology: marginal marine; unlithified siltstone and sandstone

• Restricted marine environment.
• Siltstone, sandstone and clay

Size class: macrofossils

Collection methods: quarrying,

• Collected from bulk samples.

Primary reference: D. B. Kline. 1997. Systematics and biostratigraphy of Miocene Cirripedia of the Chesapeake Group; Maryland, North Carolina, and Virginia. Unpublished Masters thesis, University of North Carolina, Wilmington [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 51724: authorized by Austin Hendy, entered by Austin Hendy on 14.06.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for Cirripdia. Not complete with respect to molluscan fauna. Type material is reposited in USNM, ANSP, and University of North Carolina, Wilmington.
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Bivalvia
 Ostreida - Gryphaeidae
Pycnodonte percrassa
Pycnodonte percrassa Conrad 1840 oyster
Thecostraca
 Balanomorpha - Balanidae
Concavus crassostricola, Balanus imitator
Concavus crassostricola Zullo 1984 barnacle
Balanus imitator Zullo 1984 barnacle