Where: Bonneville, Madison, Teton County, Idaho (43.7° N, 111.3° W: paleocoordinates 38.6° N, 54.7° W)
When: C Member (Twin Creek Limestone Formation), Middle Jurassic to Middle Jurassic (174.7 - 145.0 Ma)
Environment/lithology: marine; lithified, fine-grained, gray, green, silty limestone
Size classes: macrofossils, mesofossils
Primary reference: 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]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 184617: authorized by Andrew Zaffos, entered by Erika Ito on 14.03.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Gastropoda | |
Nerinea sp. Deshayes 1827 snail | |
Bivalvia | |
"Pleuromya subcompressa" = Myacites (Pleuromya) subcompressa
"Pleuromya subcompressa" = Myacites (Pleuromya) subcompressa Meek 1873 clam | |
Gryphaea planoconvexa Whitfield 1876 oyster |