SF 280; interval 2001-2079: Whiterockian, Nevada
collected by J. Ross, Jr.

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Euomphalina - Macluritidae
Maclurites sp. Le Sueur 1818
Palliseria sp. Wilson 1924
Hormogoneae - Oscillatoriales - Girvanellaceae
see common names

Geography
Country:United States State/province:Nevada County:Clark
Coordinates: 36.7° North, 114.9° West (view map)
Paleocoordinates:7.8° South, 82.2° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Ordovician
10 m.y. bin:Ordovician 2-4
Key time interval:Whiterockian
Age range of interval:470.00000 - 457.00000 m.y. ago
Stratigraphy
Formation:Eureka
Local section:Arrow Canyon Range Local bed:2001-2079 ft
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: Whiterockian; upper transitional beds; tentatively put in zone M (M?), but that is too old for the Eureka.
Lithology and environment
Primary lithology: lithified dolomite
Lithology description: thin-bedded; resistant
Environment:shallow subtidal indet. Tectonic setting:passive margin
Geology comments: inner shelf
Taphonomy
Modes of preservation:body,replaced with silica
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (float),field collection
Reason for describing collection:biostratigraphic analysis
Collectors:J. Ross, Jr.
Metadata
Database number:104333
Authorizer:S. Finnegan Enterer:S. Finnegan
Modifier:J. Marcot Research group:marine invertebrate
Created:2011-02-07 12:04:21 Last modified:2023-09-05 17:45:30
Access level:the public Released:2011-02-07 12:04:21
Creative Commons license:CC BY
Reference information

Primary reference:
25410. 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]