USNM 41937, Split Mountain, Clayton Ridge [Mule Spring Limestone]: Dyeran, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Ptychopariida - Ptychopariidae
Ptychopariidae indet. Matthew 1887
1 specimen
"Ptychpariid sp.B"
Trilobita - Redlichiida - Olenellidae
Olenellus ? puertoblancoensis (Lochman 1952)
5 specimens
total of 11 fragmented cephala from loc. USNM 41936 and 41937
see common names

Geography
Country:United States State/province:Nevada County:Esmeralda
Coordinates: 37.7° North, 117.5° West (view map)
Paleocoordinates:1.1° South, 94.8° West
Basis of coordinate:based on nearby landmark
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: 514.8 - 511 m.y. ago
Stratigraphy
Formation:Mule Spring Limestone
Stratigraphic resolution:group of beds
Stratigraphy comments: Upper 1.5m of Mule Spring Limestone; Olenellus Biozone of uppermost Lower Cambrian
Lithology and environment
Primary lithology: lithified lime mudstone
Environment:peritidal
Taphonomy
Fragmentation:frequent
Collection methods and comments
Collection methods:bulk,field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Metadata
Database number:69205
Authorizer:W. Kiessling Enterer:B. Brenneis
Modifier:A. Hendy Research group:marine invertebrate
Created:2007-02-21 07:29:41 Last modified:2009-06-12 20:44:41
Access level:the public Released:2007-02-21 07:29:41
Creative Commons license:CC BY
Reference information

Primary reference:

19951. F. A. Sundberg and L.B. McCollum. 2003. Early and Mid Cambrian Trilobites from the Outer-shelf Deposits of Nevada and California, USA. Palaeontology 46(5):945-986 [W. Kiessling/B. Brenneis]