Western Maryland RR cut on south end of Collier Mt., 100 yds north of Potomac River, ½ west of Pattersons Creek (Devonian of the United States)

Where: West Virginia (39.6° N, 78.7° W: paleocoordinates 44.9° S, 26.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Ridgeley Member (Oriskany Formation), Emsian (407.6 - 393.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: calcareous sandstone

• relatively high energy environment. Some specimens are complete and, in spite of transport, show essentially no evidence of wear.

Size class: macrofossils

Preservation: original silica

Reposited in the USNM

Primary reference: E. L. Yochelson and J. Kříž. 1974. Platyceratid Gastropods from the Oriskany Sandstone (Lower Devonian) near Cumberland, Maryland: Synonymies, Preservation and Color Markings. Journal of Paleontology 48(3):474-483 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 70109: authorized by Pete Wagner, entered by Pete Wagner on 16.03.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• Gastropods only treated in detail.
Show authors, comments, and common names
Rhynchonellata
 Spiriferida - Acrospiriferidae
Acrospirifer sp.
Acrospirifer sp. Wedekind 1926
Gastropoda
 Cyrtoneritida - Orthonychiidae
"Platyceras (Orthonychia) tortuosum" = Orthonychia tortuosa
"Platyceras (Orthonychia) tortuosum" = Orthonychia tortuosa Hall 1859 snail
 Euomphalina - Platyceratidae
"Platyceras (Platyceras) gebharti" = Platyostoma gebhardi, "Platyceras (Platyceras) magnificum" = Platyceras magnificum, Crossoceras belandi
"Platyceras (Platyceras) gebharti" = Platyostoma gebhardi Conrad 1840 snail
"Platyceras (Platyceras) magnificum" = Platyceras magnificum Hall 1859 snail
Crossoceras belandi Boucot and Yochelson 1966 snail