Protathyris Community of the Tonoloway Formation, Pendleton Co., West Virginia (Silurian of the United States)

Where: West Virginia (38.7° N, 79.5° W: paleocoordinates 32.5° S, 45.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: middle Member (Tonoloway Formation), Ludlow (427.4 - 423.0 Ma)

• Middle member of Tonoloway Formation. Tonoloway Formation (Limestone) is Late Ludlow to Pridoli according to USGS Lexicon (stratigraphic dating as of 1994). Age range of community is Wenlock to Ludlow.

• member-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lime mudstone

• "Geographic and stratigraphic relations with associated communities indicate BA 2. Conditions of articulation suggest quiet water."

•SEP added: "occurrences in evaporitic situations...tend to implicate hypersaline conditions"

• In general description of this community, matrix said to be micritic.

Reposited in the USNM

• Abundances stated in text.

Primary reference: A. J. Boucot. 1999. Some Wenlockian-Geddinian, chiefly brachiopod dominated communities of North America. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 549-591 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 24890: authorized by Michael Foote, entered by Michael Foote on 22.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Orthotetida - Schuchertellidae
Schuchertella sp.
Schuchertella sp. Girty 1904
genus name in quotes
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
Microsphaeridiorhynchus litchfieldensis
 Spiriferida - Delthyrididae
Delthyris sp.
Delthyris sp. Dalman 1828
 Athyridida - Athyrididae
Protathyris congregata