Where: Montana (45.3° N, 112.8° W: paleocoordinates 15.9° N, 33.9° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Dinwoody Formation, Griesbachian (251.9 - 250.5 Ma)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified mixed carbonate-siliciclastic sediments
Size class: macrofossils
Preservation: mold/impression
Primary reference: K.W. Ciriacks. 1963. Permian and Eotriassic bivalves of the middle Rockies. Bulletin of the American Museum of Natural History 125(1):1-100 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 105389: authorized by Matthew Clapham, entered by Matthew Clapham on 20.02.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Claraia stachei Bittner 1901 scallop
Claraia clarai Emmrich 1844 scallop | |
Eumorphotis amplicostata n. sp.
Eumorphotis amplicostata n. sp. Ciriacks 1963 scallop |