Author:

Dyman,T.S.;Nichols,D.J.

Year:

1988

Title:

Stratigraphy of Middle Cretaceous Blackleaf and Lower Part of the Prontier Formations in parts of Beaverhead and Madison Counties, Montana.

Reference:

Dyman,T.S. et al. (1988) Stratigraphy of Middle Cretaceous Blackleaf and Lower Part of the Prontier Formations in parts of Beaverhead and Madison Counties, Montana. United States Geological Survey, Bulletin # 1773 P. 1- 31

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