D 1773 CO: Ibexian, Nevada
collected by J. Ross, Jr.

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Stauriida - Streptelasmatidae
Anthozoa - Stauriida - Stauriidae
? Palaeophyllum sp. Billings 1858
Anthozoa - Heliolitida - Halysitidae
? Catenipora sp. Lamarck 1816
see common names

Geography
Country:United States State/province:Nevada County:Eureka
Coordinates: 39.6° North, 116.3° West (view map)
Paleocoordinates:28.8° North, 116.2° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
10 m.y. bin: Cambrian-Ordovician
Key time interval: Ibexian Trilobite zone: 
Age range of interval: 488.9 - 471.3 m.y. ago
Stratigraphy
Formation:Hanson Creek Member:Middle?
Local section:Lone Mountain Local bed:65 ft
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Ibexian
Lithology and environment
Primary lithology: lithified dolomite
Lithology description: coarse-grained; locally “vuggy”
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:bulk,field collection
Reason for describing collection:biostratigraphic analysis
Collectors:J. Ross, Jr.
Metadata
Also known as:SF 466
Database number:104522
Authorizer:S. Finnegan Enterer:S. Finnegan
Modifier:M. Uhen Research group:marine invertebrate
Created:2011-02-07 12:04:21 Last modified:2025-02-22 15:12:02
Access level:the public Released:2011-02-07 12:04:21
Creative Commons license:CC0
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]