D1435 CO (Ordovician of the United States)

Also known as SF 599

Where: Nye County, Nevada (36.7° N, 116.2° W: paleocoordinates 5.8° S, 85.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Presbynileus ibexensis trilobite zone, Ninemile Formation, Blackhillsian (474.9 - 470.0 Ma)

• Ibexian ?Zone I. Barnes Unit 7

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified limestone

• middle shelf
• nodular; silty; interbedded w fissile olive shales

Size class: macrofossils

Preservation: replaced with silica

Collected by J. Ross, Jr. H. B. Barnes

Collection methods: bulk,

Primary reference: R. J., J.r. Ross and H. B. Barnes. 1967. Some Middle Ordovician Brachiopods and Trilobites from the Basin Ranges, Western United States. United States Geological Survey Professional Paper 523-D:D1-D4 [S. Finnegan/S. Finnegan/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 104651: authorized by Seth Finnegan, entered by Seth Finnegan on 07.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Proetida - Hystricuridae
? Psalikilus sp.
? Psalikilus sp. Ross 1951 trilobite
 Trinucleida - Raphiophoridae
Ampyx sp.
Ampyx sp. Dalman 1827 trilobite
 Asaphida - Asaphidae
Ptyocephalus sp.
Ptyocephalus sp. Agassiz 1843 trilobite
 Ptychopariida - Shumardiidae
Shumardia sp.
Shumardia sp. Billings 1862 trilobite