Pinesburg Station quarry, Potomac River (Ordovician of the United States)

Where: Maryland (39.6° N, 77.9° W: paleocoordinates 30.6° S, 63.0° W)

• coordinate estimated from map

When: Phragmodus polonicus conodont zone, Maclurites Bed Member (Row Park Limestone Formation), Whiterockian (471.8 - 457.5 Ma)

Environment/lithology: marine; limestone

Size classes: macrofossils, mesofossils

Reposited in the USNM

Primary reference: G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186180: authorized by Pete Wagner, entered by Pete Wagner on 16.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Orthotetida - Triplesiidae
Onychoplecia obesa Cooper 1956