D1678 CO (Ordovician of the United States)

Also known as SF 52

Where: Lincoln County, Nevada (37.3° N, 115.4° W: paleocoordinates 6.2° S, 84.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: J? trilobite zone, Ninemile Formation, Blackhillsian (474.9 - 470.0 Ma)

• Ibexian; Blackhillsian; was Antelope Valley Limestone

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

• carbonate platform
• flat pebble conglomerates; medium-bedded

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 104403: authorized by Seth Finnegan, entered by Seth Finnegan on 07.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• No interiors on brachiopods
Show authors, comments, and common names
Strophomenata
 Strophomenida - Taffiidae
? Leptella sp.
? Leptella sp. Hall and Clarke 1892
 Billingsellida - Polytoechiidae
Tritoechia sp.
Tritoechia sp. Ulrich and Cooper 1936
Rhynchonellata
 Pentamerida - Tetralobulidae
? Plectotrophia sp.
 Orthida - Archaeorthidae
? Archaeorthis sp.
? Archaeorthis sp. Schuchert and Cooper 1931
 Orthida - Hesperonomiidae
Hesperonomia sp.
Hesperonomia sp. Ulrich and Cooper 1936
Trilobita
 Asaphida - Asaphidae
Ptyocephalus sp., Presbynileus sp.
Ptyocephalus sp. Agassiz 1843 trilobite
Presbynileus sp. Hintze 1954 trilobite