USGS Mesozoic Loc. 19214 - Lower canyon on Yellowstone River (Jurassic of the United States)
Where: Park County, Montana (45.6° N, 110.6° W: paleocoordinates 37.4° N, 50.1° W)
• coordinate estimated from map
When: Piper Formation, Bajocian (170.3 - 168.3 Ma)
• Middle limestone member.
Environment/lithology: marine; limestone
Size class: macrofossils
Collected by A. C. Peale in 1872
Primary reference: R. W. Imlay. 1967. Twin Creek Limestone (Jurassic) in the Western Interior of the United States. United States Geological Survey Professional Paper 540:1-105 [S. Holland/P. Monarrez]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 167218: authorized by Steven Holland, entered by Pedro Monarrez on 08.03.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Cephalopoda | |
|
Sohlites spinosus Imlay 1967 ammonite | |
|
Parachondroceras andrewsi Imlay 1967 ammonite
Parachondroceras filicostatum Imlay 1967 ammonite | |