Where: Nye County, Nevada (38.8° N, 116.5° W: paleocoordinates 6.5° S, 77.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: B Member (Copenhagen Formation), Mohawkian (457.5 - 452.5 Ma)

• 38 feet above base of Member B, topmost exposure below Eureka Quartzite

Environment/lithology: lithology not reported

Size class: macrofossils

Primary reference: R. J. Ross, Jr. and F. C. Shaw. 1972. Distribution of the Middle Ordovician Copenhagen Formation and its trilobites in Nevada. United States Geological Survey Professional Paper 749:1-33 [M. Hopkins/M. Hopkins/M. Hopkins] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 105561: authorized by Melanie Hopkins, entered by Melanie Hopkins on 22.02.2011