Retort Phosphatic Shale Member, Phosphoria Formation of Idaho: Lopingian, Idaho

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes
Osteichthyes indet. Huxley 1880
see common names

Geography
Country:United States State/province:Idaho
Coordinates: 44.0° North, 114.0° West (view map)
Paleocoordinates:16.7° North, 34.4° West
Basis of coordinate:based on political unit
Geographic resolution:basin
Time
Period: Permian Epoch: Lopingian
10 m.y. bin: Permian 4
Key time interval: Lopingian
Age range of interval: 259.51 - 251.902 m.y. ago
Stratigraphy
Formation:Phosphoria Member:Retort Phosphatic Shale
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:phosphatic claystone
Secondary lithology:black "limestone"
Includes fossils?Y
Includes fossils?Y
Lithology description: phosphatic claystone and dark, fine grained limestone
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:11282
Authorizer:A. Miller Enterer:C. Ferguson
Modifier:M. Clapham Research group:marine invertebrate
Created:2001-07-31 09:09:44 Last modified:2018-11-25 21:56:33
Access level:the public Released:2001-07-31 09:09:44
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]