D1991 CO. Meiklejohn mud-mound: Whiterockian, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Corynexochida - Illaenidae
Illaenus informal sp. C Dalman 1827
    = Illaenus ? oscitatus Fortey 1980
Fortey 1980
Trilobita - Asaphida - Nileidae
? Peraspis sp. Whittington 1965
Nileus sp. Dalman 1827
Trilobita - Phacopida - Cheiruridae
Lehua aff. argus Whittington 1963
Trilobita - Proetida - Bathyuridae
Bathyurellus informal sp. 4 Billings 1865
    = Punka caecata Fortey 1980
Fortey 1980
Strophomenata - Strophomenida
Plectambonitoidea indet. Jones 1928
Rhynchonellata - Pentamerida - Camerellidae
Idiostrophia conciliata
Idiostrophia nuda
Camerella informal sp. 1 Billings 1859
Rhynchonellata - Pentamerida - Tetralobulidae
? Cuparius sp. Ross 1971
Rhynchonellata - Orthida - Orthidiellidae
? Orthidiella sp. Ulrich and Cooper 1936
? Orthidium aff. fimbriatum
Rhynchonellata - Orthida - Archaeorthidae
Pleurorthis sp. Cooper 1956
Lingulata - Siphonotretida - Siphonotretidae
Schizambon sp. Walcott 1884
Conodonta - Protopanderodontida - Protopanderodontidae
Scolopodus varicostatus Sweet and Bergström 1962
synonym of Protopanderodus insculptus
"Drepanodus" sp. Pander 1856
Conodonta - Ozarkodinida
Periodon ? aculeatus Hadding 1913
Conodonta - Prioniodontida - Oistodontidae
Oistodus sp. Pander 1856
Conodonta - Prioniodontida - Balognathidae
? Tetraprioniodus sp. Lindstrom 1955
Conodonta
Scandodus sp. Lindstrom 1955
Scandodus unicostatus
see common names

Geography
Country:United States State/province:Nevada County:Nye
Coordinates: 36.9° North, 116.7° West (view map)
Paleocoordinates:6.4° South, 82.4° West
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:470.00000 - 457.00000 m.y. ago
Stratigraphy
Geological group:Pogonip Formation:Antelope Valley
Regional section:Antelope Valley Formation Regional bed:78 ft
Regional order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Lower Antelope Valley Limestone, 10 ft above base of the mud-mound, 78 ft above base of the formation, Orthidiella Zone, Early Whiterockian
Lithology and environment
Primary lithology: lithified wackestone
Lithology description: highly fossiliferous pocket in the main mass of the mud-mound
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 1991 CO. Reef 2366
Database number:80054
Authorizer:W. Kiessling, M. Hopkins Enterer:U. Merkel, M. Hopkins
Modifier:J. Marcot Research group:marine invertebrate
Created:2008-04-02 01:26:33 Last modified:2023-09-05 14:19:17
Access level:the public Released:2008-04-02 01:26:33
Creative Commons license:CC BY
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]

Secondary references:

35227 R. A. Fortey. 1980. The Ordovician trilobites of Spitsbergen. III. Remaining trilobites of the Valhallfonna Formation. Norsk Polarinstitutt Skrifter 171:1-163 [M. Hopkins/M. Hopkins]