D 1829 CO: Blackhillsian, Nevada
collected by J. Ross, Jr.

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Asaphida - Asaphidae
Presbynileus sp. Hintze 1954
Trigonocerca typica Ross 1951
Trilobita - Proetida - Bathyuridae
? Peltabellia sp. Whittington 1953
see common names

Geography
Country:United States State/province:Nevada County:White Pine
Coordinates: 39.5° North, 114.9° West (view map)
Paleocoordinates:6.1° South, 82.6° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Ordovician Epoch:Early/Lower Ordovician
Stage:Floian 10 m.y. bin:Ordovician 2
Key time interval:Blackhillsian Trilobite zone: H?
Age range of interval:473.90000 - 470.00000 m.y. ago
Stratigraphy
Geological group:Pogonip Formation:Woodward D
Local section:Above Steptoe Ranch, Egan R., NV Local bed:50 ft
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Ibexian
Lithology and environment
Primary lithology: lithified "limestone"
Lithology description: calcarenitic; Intraformational conglomerates; light chert
Environment:open shallow subtidal Tectonic setting:passive margin
Geology comments: carbonate ramp, above wave base
Taphonomy
Modes of preservation:body,replaced with silica
Size of fossils:macrofossils
Collection methods and comments
Collection methods:bulk,field collection
Reason for describing collection:biostratigraphic analysis
Collectors:J. Ross, Jr.
Metadata
Also known as:SF 655
Database number:104571
Authorizer:S. Finnegan Enterer:S. Finnegan
Modifier:P. Wagner Research group:marine invertebrate
Created:2011-02-07 12:04:21 Last modified:2018-05-16 11:10:33
Access level:the public Released:2011-02-07 12:04:21
Creative Commons license:CC BY
Reference information

Primary reference:
25411. 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]