Where: Walworth County, Wisconsin (43.0° N, 88.0° W: paleocoordinates 21.5° S, 53.4° W)

• coordinate estimated from map

• hand sample-level geographic resolution

When: Pterospathodus celloni conodont zone, Brandon Bridge Formation, Telychian (438.5 - 433.4 Ma)

• Unit 6 or 8 of Ball (1940). Listed as Upper Llandovery, Pterospathodus celloni conodont age

• group of beds-level stratigraphic resolution

Environment/lithology: offshore shelf; poorly lithified, dolomitic, gray, green, argillaceous mudstone

Size classes: macrofossils, mesofossils

Preservation: cast, mold/impression, replaced with silica

Primary reference: R. Watkins, J. J. Kuglitsch, and P. E. McGee. 1994. Silurian of the Great Lakes region, part 2: Paleontology of the Upper Llandovery Brandon Bridge Formation, Walworth County, Wisconsin. Milwaukee Public Museum Contributions in Biology and Geology 87:1-53 [P. Novack-Gottshall/P. Hearn/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 76451: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 20.11.2007

Creative Commons license: CC BY (attribution)