Abstract
The Alum Shale Formation exposed at the Degerhamn quarry road section, southern Öland, Sweden, contains a diversified assemblage of euconodonts, paraconodonts and protoconodonts, the majority of which have ranges confined to the Furongian Series (Cambrian). The first occurrence (FO) of the cosmopolitan euconodont species Proconodontus muelleri is recorded in the uppermost part of the Ctenopyge spectabilis trilobite Zone and the first appearance datum of Cordylodus? andresi is in the upper part of the Parabolina lobata trilobite Zone. Three new successive paraconodont associations are introduced: (1) the Furnishina Association, (2) the Prooneotodus Association and (3) the Westergaardodina Association, which, respectively, correspond to deeper marine, deep marine and shallow marine conditions. The genus Stenodontus Chen & Gong is revised in multielement taxonomy. New species formally named are Furnishina holmi and Westergaardodina asinina; Furnishina sp. A and Furnishina sp. B are described in open nomenclature.
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