Where: Clark County, Nevada (36.4° N, 115.5° W: paleocoordinates 7.4° S, 82.6° W)

• coordinate based on nearby landmark

When: Antelope Valley Formation (Pogonip Group), Whiterockian (470.0 - 457.3 Ma)

Environment/lithology: marine; lithified, medium-grained, shelly/skeletal, gray dolomite

Size class: macrofossils

Preservation: recrystallized, replaced with silica

Reposited in the USNM

Collection methods: bulk, surface (float)

Primary reference: R. J. Ross, Jr. and C. R. Longwell. 1964. Middle and Lower Ordovician Formations in Southernmost Nevada and Adjacent California. United States Geological Survey Bulletin 1180-C:C1-C101 [S. Finnegan/S. Finnegan/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 90654: authorized by Alex Lin, entered by Alex Lin on 12.08.2009, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)