Where: Allegany County, Maryland (39.7° N, 78.8° W: paleocoordinates 36.7° S, 27.6° W)

When: Parkhead Member (Jennings Formation), Frasnian (382.7 - 372.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; green shale

Size class: macrofossils

Reposited in the USNM

Primary reference: C.M. Prosser and E.M. Kindle. 1913. Systematic paleontology of the Middle Devonian deposits of Maryland. Systematic paleontology of the Middle Devonian deposits of Maryland 115-338 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 154838: authorized by Pete Wagner, entered by Pete Wagner on 15.03.2014

Creative Commons license: CC BY (attribution)