A conodont fauna from a thin limestone bed, considered to be of Wenlockian age, in the Usk inlier, Monmouthshire, is described. Ninety-seven specimens are assigned to four genera and eight species. The fauna is referable to the sagitta conodont zone and suggested correlations are made with the upper part of the Ostracoden-Kalkes in Germany, with part of the Aulacopleura Schichten and Kok-Kalk in Austria, and with part of the Lockport dolomite and Rochester shale in North America.

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