[24987] North American, Strata: Middle Ordovician, Period: 22494, Rec 1905

[Rec № 1905] Interpretation of cross-beds in the Bigby Facies of the Bigby-Cannon Formation (Ordovician) in the central basin of Tennessee

Brooke, J. P.
Masters thesis, Vanderbilt University, 1971, « Missing Vol »