Also known as USGS D57(SD)
Where: Broadwater County, Montana (46.0° N, 111.5° W: paleocoordinates 14.2° S, 46.3° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Three Forks Shale Formation, Famennian (372.2 - 358.9 Ma)
• 32-42 feet below Lodgepole Limestone, 0-10 feet above base of upper siltstone unit.
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; lithified, black, green shale
Reposited in the USGS
Primary reference: G. D. Robinson. 1963. Geology of the Three Forks Quadrangle, Montana. United States Geological Survey Professional Paper 370:1-143 [J. Alroy/M. Sommers/J. Ju]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 7222: authorized by John Alroy, entered by Mike Sommers on 19.05.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
Camarotoechia sp. Hall and Clarke 1893 | |
"Nudirostra sp." = Leiorhynchus
"Nudirostra sp." = Leiorhynchus Hall 1860 | |