LocNo: 7708Trident Mb.,Three Forks Fm.
| Country: |
USA
|
| Province: |
Montana, Madison Co.
|
| Locality: |
Three Forks,Milligan Canyon
|
| Layer: | Trident Mb.,Three Forks Fm. |
| Lower Boundary: |
UD3C--UD4A:(annulata Zone base) [14,90], 367.6 million years
|
| Upper Boundary: |
UD4A--UD4B: dunkeri Zone base [15,55], 366.8 million years
|
| Georeference: |