D 716 CO (Ordovician to of the United States)

Also known as SF 601

Where: Nye County, Nevada (37.1° N, 116.5° W: paleocoordinates 5.7° S, 84.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Pseudocybele nasuta - Paralenorthis/Orthidiella other zone, Ninemile/Lower Antelope Valley Formation, Blackhillsian to Blackhillsian (474.9 - 470.3 Ma)

• Ibexian Zones J-L (Mixed)

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified shale

• middle shelf
• interbedded w/limestone ledges

Size class: macrofossils

Preservation: replaced with silica

Collected by J. Ross, Jr.

Collection methods: 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: biostratigraphic analysis

PaleoDB collection 104356: authorized by Seth Finnegan, entered by Seth Finnegan on 07.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Asaphidae
Lachnostoma latucelsum Ross 1951 trilobite
Rhynchonellata
 Orthida - Hesperonomiidae
Hesperonomia sp. Ulrich and Cooper 1936