Unit 11, Rochester Shale, McKenzie-Pinto Section (Silurian to of the United States)

Where: Allegany County County, Maryland (39.6° N, 78.8° W: paleocoordinates 29.2° S, 47.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Rochester Shale Formation (Clinton Group), Llandovery to Llandovery (443.4 - 423.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, gray shale and lithified, blue limestone

• Dark-gray shale with thin bands of crystalline bluish 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 41128: authorized by Pete Wagner, entered by Kimberly Koverman on 07.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Tentaculita
 Cornulitida - Cornulitidae
Strophomenata
 Orthotetida - Pulsiidae
Ostracoda
 Beyrichicopida - Aechminidae
 Palaeocopida - Beyrichiidae
 Platycopida - Kloedenellidae
Trilobita
 Phacopida - Dalmanitidae
Cytherina
  -
"Paraechmina spinosa" = Cytherina spinosa
"Paraechmina spinosa" = Cytherina spinosa Hall 1852