1205-M-middle: Middle Jurassic - Late/Upper Jurassic, Idaho

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda
Gastropoda indet. Cuvier 1795
Bivalvia - Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758
Bivalvia - Ostreida - Gryphaeidae
Gryphaea nebrascensis
Bivalvia - Pectinida - Pectinidae
Camptonectes sp. Meek 1864
Bivalvia - Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789
Bivalvia - Cardiida - Arcticidae
? Pronoella sp. Fischer 1887
Bivalvia - Cardiida - Cardiidae
Protocardia sp. (Beyrich 1845)
Bivalvia - Carditida - Astartidae
Astarte sp. Sowerby 1816
Crinoidea - Isocrinida - Pentacrinitidae
Pentacrinus asteriscus Meek and Hayden 1858
see common names

Geography
Country:United States State/province:Idaho County:Bonneville, Madison, Teton
Coordinates: 43.7° North, 111.3° West (view map)
Paleocoordinates:38.6° North, 54.7° West
Time
Period:Jurassic
Key time interval:Middle Jurassic - Late/Upper Jurassic
Age range of interval:174.70000 - 145.00000 m.y. ago
Stratigraphy
Formation:Twin Creek Limestone Member:F
Lithology and environment
Primary lithology:fine,gray,white lithified silty "limestone"
Lithology description: Member F consists of a fine-grained gray silty limestone that weathers light gray to white. This member is almost entirely thin bedded and weathers into elongate pencil-shaped splinters.
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:184619
Authorizer:A. Zaffos Enterer:E. Ito
Created:2017-03-14 10:51:32 Last modified:2017-03-14 10:51:32
Access level:the public Released:2017-03-14 10:51:32
Creative Commons license:CC BY
Reference information

Primary reference:
61867. M. H. Staatz and H. F. Albee. 1966. Geology of the Garns Mountain Quadrangle Bonneville, Madison, and Teton Counties, Idaho. United States Geological Survey Bulletin (1205) [A. Zaffos/E. Ito]