D 368i CO (Ordovician of the United States)

Also known as SF 449

Where: Eureka County, Nevada (39.2° N, 116.3° W: paleocoordinates 4.3° S, 85.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Bellefontia-Xenostegium trilobite zone, Goodwin Formation, Gasconadian (485.4 - 477.7 Ma)

• Ibexian; no formal stage; B?

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified limestone

• carbonate ramp, above storm wave base
• thin-bedded; irregularly laminated; cherty, light grey

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 104518: authorized by Seth Finnegan, entered by Seth Finnegan on 07.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Asaphidae
"Niobella sp." = Niobe (Niobella) Reed 1931 trilobite
Asaphellus cf. riojanus Harrington and Leanza 1957 trilobite