D 340kCO (Ordovician of the United States)

Also known as SF 612

Where: Eureka County, Nevada (39.2° N, 116.3° W: paleocoordinates 4.7° S, 84.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Protopliomerella contracta trilobite zone, Ninemile Formation, Tulean (480.8 - 474.9 Ma)

• Ibexian; G2?

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified shale

• middle shelf
• silty; calcareous; interbedded w/ledgy Ls

Size class: macrofossils

Preservation: replaced with silica

Collected by J. Ross, Jr.

Collection methods: bulk,

Primary reference: R. J., J.r. Ross. 1970. Ordovician Brachiopods, Trilobites, and Stratigraphy in Eastern and Central Nevada. United States Geological Survey Professional Paper 639:1-99 [S. Finnegan/S. Finnegan/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 104546: 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
 Asaphida - Asaphidae
? Trigonocerca sp., ? Presbynileus sp.
? Trigonocerca sp. Ross 1951 trilobite
Megistaspis?
? Presbynileus sp. Hintze 1954 trilobite