Corrugatagnostus magnodosus n. sp., a new trilobite from the Lower Llanvirnian (Ordovician) of Kiesbert (Ebbe anticline, Rhenish massiv [massif]). Neues Jahrbuch fuer Geologie und Palaeontologie Monatshefte, 5, Mai 1997: 297-307. 300 [Zoological Record Volume 134]