Continental Divide, Zone 2, Pentagon shale (Cambrian of the United States)
Where: Montana (47.7° N, 113.3° W: paleocoordinates 5.1° S, 83.4° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Pentagon Formation, Middle Cambrian (509.0 - 497.0 Ma)
Environment/lithology: open shallow subtidal; shale
• 30 to 35 feet above base.
Size classes: macrofossils, mesofossils
Primary reference: W. C. Bell. 1941. Cambrian Brachiopoda from Montana. Journal of Paleontology 15(3):193-255 [W. Kiessling/M. Krause/M. Krause]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 155737: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 29.04.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Lingulata | |
Prototreta subcircularis, "Pegmatreta perplexa" = Linnarssonia
"Pegmatreta perplexa" = Linnarssonia | |
| Paterinata | |