Where: Marshall County, Kansas (39.8° N, 96.5° W: paleocoordinates 3.7° N, 25.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Speiser Shale Member (Wreford Formation), Sakmarian (295.0 - 290.1 Ma)

• upper upper Speiser Shale

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, calcareous mudstone

Size class: macrofossils

Preservation: original calcite

Collection methods: chemical, sieve,

Primary reference: J. F. Pachut and R. J. Cuffey. 1999. Stratigraphic and Geographic Bryozoan Abundance Gradients in the Calcareous Shales of the Wreford Megacyclothem (Lower Permian, Kansas). The University of Kansas Paleontological Contributions New Series (10)1-17 [T. Olszewski/K. Tracy/L. Fall] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 51128: authorized by Tom Olszewski, entered by Tom Olszewski on 28.05.2005, edited by Matthew Clapham