Where: Montana (48.6° N, 106.9° W: paleocoordinates 55.0° N, 72.3° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Bearpaw Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• Unit 1
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified shale
Size class: macrofossils
Reposited in the USNM
Primary reference: F. S. Jensen and H. D. Varnes. 1964. Geology of the Fort Peck area, Garfield, McCone and Valley counties, Montana. United States Geological Survey Professional Paper 414-F:1-49 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 213082: authorized by Matthew Clapham, entered by Matthew Clapham on 24.08.2020
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Limopsis parvula clam |