Fig. 36 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Fig. 36. Stockumites procedens (Korn, 1984). A. Specimen MB.C.31088 (Weyer 1993–1994 Coll.) from the Oberrödinghausen railway cutting, bed 6b. B. Cross section of paratype GZG.INV.132 (Korn 1980 Coll.) from the Hangenberg Limestone at Müssenberg(from Korn 1984). C–E. Ontogenetic development of the conch width index (ww/dm), umbilical width index (uw/dm), whorl width index (ww/wh) and whorl expansion rate (WER) of specimens from the type locality Stockum and from Oberrödinghausen. Scale bar units = 1 mm.