D 977 CO (Ordovician of the United States)

Also known as SF 278

Where: Clark County, Nevada (36.7° N, 114.9° W: paleocoordinates 7.8° S, 82.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Eureka Quartzite Formation, Whiterockian (471.8 - 457.5 Ma)

• Whiterockian; upper transitional beds

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified dolomite

• inner shelf
• sandy; interbedded w/Qzt.

Size class: macrofossils

Preservation: replaced with silica

Collected by J. Ross, Jr.

Collection methods: bulk,

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: biostratigraphic analysis

PaleoDB collection 104331: authorized by Seth Finnegan, entered by Seth Finnegan on 07.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Strophomenida - Sowerbyellidae
Sowerbyella sp. Jones 1928
 Strophomenida - Strophomenidae
Strophomena sp. Rafinesque and De Blainville 1824
 Orthida - Dalmanellidae
Paucicrura sp. Cooper 1956
 Orthida - Plaesiomyidae
 Orthida - Platystrophiidae
Platystrophia sp. King 1850