Rex Chert Member, Phosphoria Formation of Idaho: Wuchiapingian, Idaho

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Rugosa
Rugosa indet. Milne-Edwards and Haime 1850
unclassified
Porifera indet. Grant 1836
Osteichthyes
Osteichthyes indet. Huxley 1880
Gastropoda - Euomphalina - Omphalotrochidae
Babylonites sp. Yochelson 1956
Bivalvia - Pectinida - Heteropectinidae
Girtypecten sp. Newell 1938
Bivalvia - Pectinida - Aviculopectinidae
Aviculopecten sp. M'Coy 1851
Bivalvia - Pectinida - Streblochondriidae
Streblochondria cf. montpelierensis (Girty 1910)
original and current combination Aviculipecten montpelierensis
Streblochondria sp. Newell 1938
Bivalvia - Nuculanida - Polidevciidae
Polidevcia obesa (White 1879)
Bivalvia - Nuculida - Nuculidae
? Nuculopsis sp. Girty 1912
Cephalopoda - Belemnitida
Belemnitida indet. Zittel 1895
Stenolaemata - Fenestrata
Fenestrata indet. (Elias and Condra 1957)
synonym of Fenestelloidea
Stenolaemata - Trepostomata
Trepostomata indet. Ulrich 1882
entered as "Terpostomata"
Lingulata - Lingulida - Lingulidae
Lingula carbonaria Shumard and Swallow 1858
Rhynchonellata - Athyridida - Athyrididae
Composita sp. Brown 1849
Composita cf. mira (Girty 1899)
Rhynchonellata - Rhynchonellida - Leiorhynchidae
Leiorhynchus sp. Hall 1860
Strophomenata - Productida - Echinoconchidae
Bathymyonia cf. nevadensis (Meek 1877)
Strophomenata - Productida - Paucispiniferidae
aff. Liosotella sp. Cooper 1953
Strophomenata - Productida - Productellidae
Echinauris sp. Muir-Wood and Cooper 1960
Antiquatonia cf. sulcatus
Strophomenata - Productida - Productidae
Kochiproductus cf. longus
Kochiproductus sp. Dunbar 1955
Muirwoodia multistriatus
synonym of Yakovlevia
Strophomenata - Productida - Linoproductidae
Cancrinella sp.
Anidanthus echaris
Strophomenata - Orthotetida - Derbyiidae
Derbyia sp. Waagen 1884
see common names

Geography
Country:United States State/province:Idaho
Coordinates: 44.0° North, 114.0° West (view map)
Paleocoordinates:17.1° North, 34.1° West
Basis of coordinate:based on political unit
Geographic resolution:basin
Time
Period:Permian Epoch:Lopingian
Stage:Wuchiapingian 10 m.y. bin:Permian 4
Key time interval:Wuchiapingian
Age range of interval:259.51000 - 254.14000 m.y. ago
Stratigraphy
Formation:Phosphoria Member:Rex Chert
Stratigraphic resolution:member
Stratigraphy comments: Davydov et al. 2017 dated an ash bed in the upper Meade Peak Member at 260.57 ± 0.07 / 0.14 / 0.31 Ma, indicating that the Meade Peak is as young as uppermost Capitanian.
Lithology and environment
Primary lithology: chert
Secondary lithology: "limestone"
Includes fossils?Y
Includes fossils?Y
Lithology description: Chert bed with limestone lenses
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Taxonomic list comments:?Nuculopsis sp., P. obesa, S. cf. montpelierensis, Streblochondria sp. possibly from Meade Peak Member. Babylonites sp. thought to be from beds older than Grandeur Member.
Metadata
Database number:11283
Authorizer:A. Miller Enterer:C. Ferguson
Modifier:M. Clapham Research group:marine invertebrate
Created:2001-07-31 09:42:07 Last modified:2018-11-25 21:45:11
Access level:the public Released:2001-07-31 09:42:07
Creative Commons license:CC BY
Reference information

Primary reference:
4145.1% 17920E. L. Yochelson and D. H. Van Sickle. 1968. Biostratigraphy of the Phosphoria, Park City, and Shedhorn Formations; Geology of Permian Rocks in the Western Phosphate Field. United States Geological Survey Professional Paper 313(D):572-660 [A. Miller/C. Ferguson/P. Wagner]