Article: The affinities of the trilobite genus Scharyia, with a description of two new species

New discoveries of the Trilobite Scharyia have led to a critical reappraisal of the genus, in particular the nature of the cedariiform facial suture. Scharyia has been considered by a number of authors to belong to the Proetidae. but it is argued here that it has closer affinities with the Otarionidae. Two new species are described, S. siceripotrix from the Silurian (Ludlow) of the British Isles and S. heothina from the Ordovician (Ashgill) of Sweden, the latter being the first record of the genus in the Ordovician.