AMSDEN, TH.W. & J.E. BARRICK
Late Ordovician through Early Devonian annotated correlation chart and brachiopod reanges charts for the southern midcontinent region, U.S.A., with a dscussion of Silurian and Devonian conodont faunas.
1988. Oklahoma Geol. Surv. Bull. 143; 66 pp. 15 fig. 3 plts. with brachiopods, 2 large sheets with 4 plts. in separate pocket Orig. wrps. with libr. stamp, very good.

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