D1580 CO (Ordovician of the United States)

Also known as SF 75

Where: Clark County, Nevada (37.3° N, 115.8° W: paleocoordinates 6.5° S, 83.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: L trilobite zone, Lower Member (Antelope Valley Formation), Rangerian (470.0 - 470.3 Ma)

• Whiterockian; Rangerian

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

• carbonate platform
• thick-bedded; coarse and fine grained, girvanella, Receptaculites common

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 104426: 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
Trilobita
 Phacopida - Pliomeridae
Ectenonotus sp.
Ectenonotus sp. Raymond 1920 trilobite
Strophomenata
 Strophomenida - Plectambonitidae
Plectambonitidae indet.
Plectambonitidae indet. Kozlowski 1929
"Plectambonitid"
Rhynchonellata
 Orthida - Orthidae
? Orthambonites sp.
? Orthambonites sp. Pander 1830
 Orthida - Orthidiellidae
Orthidiella sp.
Orthidiella sp. Ulrich and Cooper 1936