Where: Elko County, Nevada (40.5° N, 116.0° W: paleocoordinates 8.3° S, 51.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Siphonodella isosticha - S. Crenulata zone, Chainman Shale Formation, Kinderhookian to Kinderhookian (360.7 - 345.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

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 6225: authorized by John Alroy, entered by Mike Sommers on 09.02.2000

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