D 296 CO ( of the United States)

Also known as SF 602

Where: Eureka County, Nevada (39.2° N, 116.3° W: paleocoordinates 4.5° S, 84.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: G-2 trilobite zone, Ninemile Formation, Ibexian (487.5 - 470.0 Ma)

• Ibexian

• group of beds-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: surface (float),

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 104536: 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
Rhynchonellata
 Orthida - Archaeorthidae
? Archaeorthis sp.
? Archaeorthis sp. Schuchert and Cooper 1931
Trilobita
 Proetida - Telephinidae
? Goniophrys sp.
? Goniophrys sp. Ross 1951 trilobite
 Proetida - Hystricuridae
? Hystricuridae indet.
? Hystricuridae indet. Hupé 1953 trilobite
"Hystricurid"
 Asaphida - Asaphidae
Presbynileus ibexensis, ? Isoteloides sp., Megistaspis sp.
Presbynileus ibexensis Hintze 1953 trilobite
? Isoteloides sp. Raymond 1910 trilobite
Megistaspis sp. Jaanusson 1956 trilobite
 Ptychopariida - Shumardiidae
Shumardia sp.
Shumardia sp. Billings 1862 trilobite