Unit 9, Upper Tonoloway Limestone, Grasshopper Run Section II (Silurian to of the United States)

Where: Morgan County County, West Virginia (39.6° N, 78.2° W: paleocoordinates 32.8° S, 42.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tonoloway Limestone Formation, Ludlow to Ludlow (427.4 - 419.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, blue limestone

• Laminated blue limestone.

Primary reference: H. P. Woodward. 1941. Silurian System of West Virginia. West Virginia Geological Survey 14:1-326 [P. Wagner/K. Koverman/K. Koverman]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 41174: authorized by Pete Wagner, entered by Kimberly Koverman on 07.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Leperditicopida - Leperditiidae
Bivalvia
 Ostreida - Pterineidae
"Leiopteria pennsylvanica" = Leptodesma (Leiopteria)
"Leiopteria pennsylvanica" = Leptodesma (Leiopteria) oyster
[entered as Liopteria pennsylvanica]
 Modiomorphida - Modiomorphidae
Rhynchonellata
 Athyridida - Meristellidae
 Rhynchonellida - Camarotoechiidae