Also known as SF 158

Where: Nye County, Nevada (37.1° N, 116.5° W: paleocoordinates 6.4° S, 82.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: O? zone, “Unit I” of Johnson and Hibbard, 1957 Member (Antelope Valley Ls Formation), Whiterockian (471.8 - 457.5 Ma)

• Whiterockian

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

Size class: macrofossils

Preservation: replaced with silica

Collected by J. Ross, Jr.

Collection methods: surface (float),

Primary reference: J. Ross, Jr. 1964. Middle and Lower Ordovician Formations in Southernmost Nevada and Adjacent California. United States Geological Survey Bulletin 1180-C [S. Finnegan/S. Finnegan] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 104299: authorized by Seth Finnegan, entered by Seth Finnegan on 07.02.2011