D1972 CO. Meiklejohn mud-mound: Whiterockian, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata - Strophomenida - Plectambonitidae
Rhynchonellata - Orthida - Archaeorthidae
? Pleurorthis sp. Cooper 1956
Rhynchonellata - Pentamerida - Camerellidae
Trilobita - Corynexochida - Illaenidae
Illaenus sp. Dalman 1827
see common names

Geography
Country:United States State/province:Nevada County:Nye
Coordinates: 36.9° North, 116.7° West (view map)
Paleocoordinates:14.2° North, 125.0° West (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Ordovician
10 m.y. bin: Ordovician 2-4
Key time interval: Whiterockian Brachiopod zone:  Orthidiella
Age range of interval: 470 - 457 m.y. ago
Stratigraphy
Geological group:Pogonip Formation:Antelope Valley
Regional section:Antelope Valley Formation Regional bed:98 ft
Regional order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Lower Antelope Valley Limestone, 30 ft above the base of the mud-mound, 98 ft above base of the formation, Orthidiella Zone, Early Whiterockian
Lithology and environment
Primary lithology: lithified "limestone"
Environment:reef, buildup or bioherm
Geology comments: 80 m thick and 300 m wide mud-mound in an outer ramp setting in relatively deep and cold water. Core of the mound with zebra limestone bands and stromatactis structures.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USGS
Metadata
Also known as:USGS D 1972 CO. Reef 2366
Database number:80056
Authorizer:W. Kiessling Enterer:U. Merkel
Modifier:J. Marcot Research group:marine invertebrate
Created:2008-04-02 01:50:47 Last modified:2025-02-22 15:12:02
Access level:the public Released:2008-04-02 01:50:47
Creative Commons license:CC0
Reference information

Primary reference:
25409. R. J. Ross, Jr. 1972. Fossils from the Ordovician bioherm at Meiklejohn Peak, Nevada. United States Geological Survey Professional Paper 685 [S. Finnegan/S. Finnegan/U. Merkel]