Fig. 9 in The ammonoids from the Gattendorfia Limestone of Gattendorf (Devonian-Carboniferous boundary; Upper Franconia, Germany)

Fig. 9. Stockumites intermedius (Schindewolf, 1923) from Gattendorf, bed 21, all (Schindewolf 1916 Coll.). A. Cross section of specimen SMF Mbg.7564. B. Cross section of specimen SMF Mbg.7565. C. Suture line of paralectotype SMF Mbg.7563, at dm = 16.7 mm, ww = 12.9 mm, wh = 8.3 mm. D. Growth line course of paralectotype SMF Mbg.7563, at dm = 14.8 mm, ww = 11.4 mm, wh = 7.3 mm. E. Growth line course of lectotype SMF Mbg.3111, at ww = 18.6 mm, wh = 14.0 mm. F–H. 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 selected specimens. Scale bar units = 1 mm.