D 825 CO (Ordovician of the United States)

Also known as SF 140

Where: Nye County, Nevada (36.9° N, 116.7° W: paleocoordinates 6.4° S, 82.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: O? zone, Antelope Valley Formation (Pogonip Group), Whiterockian (470.0 - 457.3 Ma)

• Whiterockian

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

• carbonate platform
• thin-bedded; medium-bedded; thin to medium bedded

Size class: macrofossils

Preservation: replaced with silica

Collected by J. Ross, Jr.

Collection methods: bulk,

Primary reference: R. J. Ross, Jr. and C. R. Longwell. 1964. Middle and Lower Ordovician Formations in Southernmost Nevada and Adjacent California. United States Geological Survey Bulletin 1180-C:C1-C101 [S. Finnegan/S. Finnegan/J. Marcot]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 104281: 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
 Hollinocopida - Primitiopsidae
? Anisocyamus sp.
 Palaeocopida - Hollinidae
Winchellatia sp.
Trilobita
 Asaphida - Remopleurididae
Remopleurides sp.
Remopleurides sp. Portlock 1843 trilobite
 Asaphida - Asaphidae
? Isotelus sp.
? Isotelus sp. Dekay 1824 trilobite
large stout w/out genal spines