Where: Blaine County, Idaho (43.7° N, 113.9° W: paleocoordinates 7.5° S, 47.5° W)

• small collection-level geographic resolution

When: Siphonodella isosticha - S. Crenulata zone, Drummond Mine Limestone Member (McGowan Creek Formation), Kinderhookian to Kinderhookian (360.7 - 345.3 Ma)

• 15 m below top of member.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Reposited in the USGS

Primary reference: M. Gordon, Jr. 1986. Late Kinderhookian (Early Mississippian) ammonoids of the western United States. Journal of Paleontology 60(Supplement):1-36 [J. Alroy/M. Sommers/J. Alroy] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 6229: authorized by John Alroy, entered by Mike Sommers on 09.02.2000

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)