Bone Basin Member of Renova Formation of Bozeman Group (MT)
Tertiary
Oligocene, early
Chadronian
Type section: 1.25 mi southwest of Renova village, in NW/4 NW/4 sec. 33, T. 1 N., R. 4 W., to SW/4 NW/4 sec. 28, T. 1 N., R. 4 W., Madison Co., MT. Named from creek (Kuenzi and Fields, 1971).
Montana folded belt
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