Middle Fork Popo Agie River, Wind River Mountains: Wuchiapingian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Helodontiformes - Helodontidae
Helodus subpolitus Branson 1916
Chondrichthyes - Chimaeriformes
Hamatus phosphoriensis Branson 1916
recombined as Arctacanthus phosphoriensis
Ancistriodus multisectus Branson 1933
recombined as Arctacanthus multisectus
Chondrichthyes - Ctenacanthiformes - Ctenacanthidae
Ctenacanthus mutabilis n. sp. Branson 1933
see common names

Geography
Country:United States State/province:Wyoming
Coordinates: 42.8° North, 108.8° West (view map)
Paleocoordinates:14.0° North, 31.4° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
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:Franson
Stratigraphic resolution:group of beds
Stratigraphy comments: "Thin phosphate bed at top of Pustula Member" indicates uppermost part of Franson member. 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 lithified "shale"
Environment:offshore
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:90236
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate,vertebrate
Created:2009-07-14 18:16:38 Last modified:2018-11-25 21:28:24
Access level:the public Released:2009-07-14 18:16:38
Creative Commons license:CC BY
Reference information

Primary reference:
30292. C. C. Branson. 1933. Fish fauna of the middle Phosphoria Formation. Journal of Geology 41:174-183 [M. Clapham/M. Clapham]