4 mi NE of old town (Devonian of the United States)

Where: Garrett County, Maryland (39.1° N, 76.1° W: paleocoordinates 45.4° S, 7.2° W)

When: Hamilton Member (Romney Formation), Givetian (387.7 - 382.7 Ma)

• hemiansatus to varcus

Environment/lithology: marine

Collection methods: Rode and Lieberman collection code BRU

Primary reference: A. L. Rode and B. S. Lieberman. 2004. Using GIS to unlock the interactions between biogeography, environment, and evolution in middle and Late Devonian brachiopods and bivalves. Palaeogeography, Palaeoclimatology, Palaeoecology 211(3-4):345-359 [A. Stigall/A. Stigall/A. Stigall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 54955: authorized by Alycia Stigall, entered by Alycia Stigall on 27.09.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Pterineidae
Ptychopteria (Actinopteria) boydi Conrad 1842 oyster
boydi var gibbosa