Where: Franklin County, Iowa (42.8° N, 93.2° W: paleocoordinates 18.0° S, 36.5° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Cyathaxonia zone, Chapin Formation, Tournaisian (358.9 - 346.7 Ma)

• Laudon (1931) placed the Chapin Member in the Hampton Formation. The Chapin has since been tentatively given formation status, and the Hampton is no longer recognized. See Woodson, 1989, An excursion to the historic Gilmore City quarries, Geol. Soc. of Iowa Guidebook 50.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore shelf; ooidal, gray carbonate and dolomite

Primary reference: L. R. Laudon. 1931. The Stratigraphy of the Kinderhook Series of Iowa. Iowa Geological Survey 35:333-452 [A. Miller/A. Webber/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3314: authorized by Arnold Miller, entered by Andrew Webber on 29.07.1999

Creative Commons license: CC BY (attribution)