USGS Mesozoic loc. 10729 (Jurassic of the United States)

Where: Montana (48.0° N, 108.6° W: paleocoordinates 40.9° N, 49.2° W)

• coordinate based on nearby landmark

When: Ellis Group, Callovian (166.1 - 163.5 Ma)

Environment/lithology: marine; calcareous shale and calcareous sandstone

Size classes: macrofossils, mesofossils

Collected by C. Cathcart, T.W. Stanton in 1921

Primary reference: T. P. Poulton. 1979. Jurassic Trigoniid Bivalves from Canada and Western United States of America. Geological Survey of Canada Bulletin 282 [G. Stanley/H. Shepherd/H. Shepherd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 139487: authorized by George Stanley, entered by Hannah Shepherd on 12.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Trigoniida - Trigoniidae