USGS Loc. 11307-CO, Horse Heaven Mountain [Windfall Fm]: Tremadoc, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Conodonta - Prioniodontida - Oistodontidae
? Rossodus tenuis (Miller 1980)
Conodonta - Protopanderodontida - Drepanoistodontidae
Paltodus sp. Pander 1856
Laurentoscandodus triangularis (Furnish 1938)
Conodonta - Proconodontida - Cordylodontidae
Cordylodus lindstomi
Cordylodus intermedius Furnish 1938
Cordylodus proavus Müller 1959
Cordylodus angulatus Pander 1856
Iapetognathus sprakersi
Heteractinida
Heteractinida indet. Hinde 1888
Heteractinida - Octactinellida - Astraeospongiidae
Contignatiospongia nevadensis n. gen., n. sp. Kozur et al. 2008
Kozur et al. 2008
Hexactinellida
? Kometia sp. Webby and Trotter 1993
Kozur et al. 1996
Australispongia compressa n. sp. Kozur et al. 1996
Kozur et al. 1996
Protozoa - Archaeospicularia - Protoentactiniidae
? Protoentactinia informal sp. A Kozur et al. 1996
Protoentactinia informal sp. B Kozur et al. 1996
Protoentactinia informal sp. C Kozur et al. 1996
Protoentactinia gracilispinosa n. sp. Kozur et al. 1996
Noblella tremadociensis n. sp. Kozur et al. 1996
Protoentactinia minuta n. sp. Kozur et al. 1996
Protoentactinia latospinosa n. sp. Kozur et al. 1996
Protozoa - Archaeospicularia - Echidninidae
Parechidnina nevadensis n. sp. Kozur et al. 1996
Echidnina bengtsoni n. sp. Kozur et al. 1996
see common names

Geography
Country:United States State/province:Nevada County:Eureka
Coordinates: 39.2° North, 116.3° West (view map)
Paleocoordinates:4.3° South, 85.2° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
10 m.y. bin:Cambrian-Ordovician
Key time interval:Tremadoc Conodont zone: Cordylodus angulatus
Age range of interval:485.00000 - 477.70000 m.y. ago
Stratigraphy
Formation:Windfall
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Windfall Formation. AGE: Early Tremadoc, on the basis of conodont biostratigraphy. STRATIGRAPHIC POSITION: From upper Windfall Fm, 241 ft below the top of the formation.
Lithology and environment
Primary lithology:fine lithified silty "limestone"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Fine-grained to silty limestone. LITHIFICATION: Lithified, on the basis of facies description and sample preparation.
Environment:slope
Geology comments: ENVIRONMENT: Outermost shelf or slope facies.
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:USNM
Collection method comments: COLLECTOR: J. E. Repetski. REPOSITORY: USNM.
Taxonomic list comments:COVERAGE: Exhaustive for radiolarians and condonts. NOMENCATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications.
Metadata
Also known as:Sample 6-18-76I
Database number:90927
Authorizer:A. Hendy, W. Kiessling Enterer:A. Hendy, U. Merkel
Research group:marine invertebrate,micropaleontology,vertebrate
Created:2009-08-26 16:54:26 Last modified:2013-11-25 13:37:23
Access level:the public Released:2009-08-26 16:54:26
Creative Commons license:CC BY
Reference information

Primary reference:
30600. H. W. Kozur, H. Mostler, and J. E. Repetski. 1996. Well-preserved Tremadocian primitive Radiolaria from the Windfall Formation of the Antelope Range, Eureka County, Nevada, USA. Geol Paläont Mitt Innsbruck 21:245-271 [A. Hendy/A. Hendy]

Secondary references:

38579 H. W. Kozur, H. Mostler, and J. E. Repetski. 1996. "Modern" siliceous sponges from the lowermost Ordovician (Early Ibexian-Early Tremadocian) Windfall Formation of the Antelope Range, Eureka County, Nevada, USA. Geologisch-Paläontologische Mitteilungen Innsbruck 21:201-221 [W. Kiessling/U. Merkel]
38597 H. W. Kozur, H. Mostler, and J. E. Repetski. 2008. A new heteractinellid calcareous sponge from the lowermost Ordovician of Nevada and a discussion of the suborder Heteractinellidae. GeoAlp 5:53-64 [W. Kiessling/U. Merkel]