Where: Phillips County, Montana (47.9° N, 108.6° W: paleocoordinates 48.1° N, 66.9° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Metoicoceras mosbyense ammonoid zone, Mosby Sandstone Member (Belle Fourche Formation), Late/Upper Cenomanian (99.6 - 93.5 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified sandstone
Size class: macrofossils
Preservation: concretion
Collected by W.A. Cobban, M.M. Knechtel, S.H. Patterson, W.T. Pecora in 1948; reposited in the USNM
Primary reference: W. A. Cobban. 1953. Cenomanian ammonite fauna from the Mosby Sandstone of central Montana. United States Geological Survey Professional Paper 243-D:45-55 [M. Clapham/K. Okamoto/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 168067: authorized by Matthew Clapham, entered by Matthew Clapham on 14.04.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Metoicoceras mosbyense, Dunveganoceras parvum, "Dunveganoceras albertense" = Dunveganoceras (Dunveganoceras) albertense
Metoicoceras mosbyense Cobban 1953 ammonite
Dunveganoceras parvum Cobban 1953 ammonite
"Dunveganoceras albertense" = Dunveganoceras (Dunveganoceras) albertense Warren 1930 ammonite ssp. montanense
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