Country:
|
USA
|
Province:
|
Montana, Madison Co.
|
Locality:
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Three Forks,Red Hill
|
Layer:
|
Trident Mb.,Three Forks Fm. |
Lower Boundary:
|
P.delph.--low.Platyclym.annulata IIIb/IV, 367.6 million years
|
Upper Boundary:
|
UD4A--UD4B: dunkeri Zone base [15,55], 366.8 million years
|
Georeference:
|
|