Unit 16, Middle 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: Middle Member (Tonoloway Limestone Formation), Ludlow to Ludlow (427.4 - 419.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone and lithified, calcareous shale

• Medium-bedded somewhat nodular limestone and calcareous shale; some gray crystalline limestone.

Size class: macrofossils

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 41630: authorized by Pete Wagner, entered by Kimberly Koverman on 19.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Unicinulus marylandicus
Ostracoda
 Palaeocopida - Beyrichiidae
Welleria obliqua
 Palaeocopida - Kloedenellidae
Dizygopleura halli, Dizygopleura simulans, Dizygopleura subovalis
 Leperditicopida - Leperditiidae
Leperditia alta
Rhynchonellata
 Athyridida - Meristellidae
Hindella congregata
 Rhynchonellida - Camarotoechiidae
Camarotoechia litchfieldensis, Camarotoechia tonolowayensis
Gastropoda
 Murchisoniina - Hormotomidae
Hormotoma rowei
 Murchisoniina - Murchisoniidae
"Solenospira minuta" = Murchisonia minuta
"Solenospira minuta" = Murchisonia minuta Grabau and Sherzer 1910 snail
Cephalopoda
 Orthocerida - Orthoceratidae
"Orthoceras" sp.
"Orthoceras" sp. Breynius 1832