GE18MTm, Geary County (Permian of the United States)

Where: Geary County, Kansas (39.1° N, 96.7° W: paleocoordinates 1.6° N, 26.4° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Threemile Shale Member (Wreford Formation), Sakmarian (295.5 - 290.1 Ma)

• middle Threemile Shale

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, calcareous mudstone

• normal salinity, low turbulence, shallow-marine waters, perhaps between 3 to 16 meters deep, epeiric platform

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 51054: authorized by Tom Olszewski, entered by Tom Olszewski on 26.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• only bryozoans
Stenolaemata
 Cryptostomata - Acanthocladiidae
 Cryptostomata - Fenestellidae
"Fenestella tenax" = Rectifenestella tenax
"Fenestella tenax" = Rectifenestella tenax Ulrich 1888
 Rhabdomesida - Rhomboporidae
 Cryptostomida - Girtyporidae