Where: Bonneville, Madison, Teton County, Idaho (43.7° N, 111.3° W: paleocoordinates 38.6° N, 54.7° W)
When: B Member (Twin Creek Limestone Formation), Middle Jurassic to Middle Jurassic (174.7 - 145.0 Ma)
Environment/lithology: marine; lithified, fine-grained, ooidal, gray 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 184616: authorized by Andrew Zaffos, entered by Erika Ito on 14.03.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Echinodermata indet. Klein 1754 | |
Gastropoda | |
Nerinea sp. Deshayes 1827 snail | |
Lyosoma powelli White 1876 snail | |
Bivalvia | |
Ostrea sp. Linnaeus 1758 oyster | |
Plagiostoma occidentalis file clam | |
Camptonectes sp. Meek 1864 scallop |