Frithjofia weddigei n. sp. (Drevermanniinae; Trilobita) from shales of the upper Dasbergian Stage (late Famennian; Upper Devonian) of the eastern Sauerland (Rheinisches Schiefergebirge; Rhenohercynian Zone). Senckenbergiana Lethaea, 87(1), June 2007: 71-77. 73 [Zoological Record Volume 144]