Groom Range, Carrara Fm, Pyramid Shale Mbr.: Dyeran, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Redlichiida - Olenellidae
Olenellus ? gilberti White 1874
Trilobita - Redlichiida - Biceratopsidae
Olenellus multinodus Palmer and Halley 1979
recombined as Nephrolenellus multinodus
see common names

Geography
Country:United States State/province:Nevada
Coordinates: 37.5° North, 115.7° West (view map)
Paleocoordinates:2.5° South, 95.5° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Cambrian Epoch:Series 2
10 m.y. bin:Cambrian 2-3
Key time interval:Dyeran Trilobite zone: Olenellus
Age range of interval:514.80000 - 511.00000 m.y. ago
Stratigraphy
Formation:Carrara Member:Pyramid Shale
Stratigraphic resolution:member
Stratigraphy comments: Throughout the area of outcrop of the Carrara Formation, the lower 10 m of this member, or correlative beds in the east where the underlying Gold Ace Limestone Member is absent, contain the distinctive association of olenellids characteristic of the Olenellus multinodus Zonule.
Lithology and environment
Primary lithology:green "shale"
Secondary lithology:brown siltstone
Lithology description: The member is primarily a green shale interbedded with brown and maroon siltstone and shale with minor amounts of quartzite and limestone.
Environment:paralic indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils,microfossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:149560
Authorizer:W. Kiessling Enterer:M. Krause
Modifier:J. Marcot Research group:micropaleontology
Created:2013-08-09 20:46:09 Last modified:2022-08-02 16:08:16
Access level:authorizer only Released:2013-11-09 20:46:09
Creative Commons license:CC BY
Reference information

Primary reference:
47804. A. R. Palmer and R. B. Halley. 1979. Physical Stratigraphy and Trilobite Biostratigraphy of the Carrara Formation (Lower and Middle Cambrian) in the Southern Great Basin. United States Geological Survey Professional Paper 1047:1-131 [W. Kiessling/M. Krause/J. Ju]