D 1820 CO (Ordovician of the United States)

Also known as SF 521

Where: White Pine County, Nevada (39.5° N, 114.9° W: paleocoordinates 6.9° S, 79.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: M trilobite zone, Kanosh Fm. Formation, Whiterockian (470.0 - 457.3 Ma)

• Whiterockian

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified limestone

• carbonate ramp, above storm wave base
• silty; nodular; interbeds of fine-grained calcarenite

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 104527: 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
Ostracoda
 Leperditicopida - Leperditiidae
Eoleperditia bivia, Eoleperditia sp.
Eoleperditia sp. Swartz 1949 ostracod
 Palaeocopida - Schmidtellidae
? Paraschmidtella sp.
? Paraschmidtella sp. Sidaraviciené 1992 ostracod
Trilobita
 Proetida - Bathyuridae
Pseudoolenoides acicaudus
Pseudoolenoides acicaudus Hintze 1953 trilobite
Rhynchonellata
 Orthida - Plectorthidae
Desmorthis sp.
Desmorthis sp. Ulrich and Cooper 1936