BRACK, PETER & HANS RIEBER
Towards a better understanding of the Anisian/Landinian boundary: New biostratigraphic data and correlations of boundary sections from the Southern Alps.
1993. Reprint: Eclogae Geologicae Helvetiae 86-2; pp. 415-527, 17 fig./phot. incl. 4 fold-out plts. h.t. 14 plts with fossils (13 with ammonites). Orig. wrps. very good.

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