Article: The taxonomy and shell characteristics of a new elkaniid brachiopod from the Ashgill of Sweden

A new elkaniid brachiopod genus and species, Tilasia rugosa, is described from the Ashgill (Harju Series) Boda Limestone in the Siljan district (province of Dalarna), Sweden. It is the first record of the lingulacean family Elkaniidae from the Upper Ordovician. The material of T. rugosa, which is one of the largest described member of the family, is well preserved and allows an account of the micro-ornamentation and shell structure. The strongly rugose exterior has a divaricate ornamentation with minute rhomboid pits, previously not known among the elkaniids.