Fig. 41 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Fig. 41. Stockumites antecedens (Vöhringer, 1960) from the Oberrödinghausen railway cutting; all Vöhringer Coll. A. Dorsal view reconstruction and photographs of holotype GPIT-PV-63907 from bed 5. B. Cross section of paratype GPIT-PV-63910 from bed 5. C. Cross section of paratype GPIT- PV-63908 from bed 3d. D. Suture line of paratype GPIT-PV-63910 from bed 5, at dm = 14.5 mm, ww = 7.7 mm, wh = 7.5 mm. E. Growth line course of holotype GPIT-PV-63907 from bed 5, at dm = 16.0 mm, ww = 9.0 mm, wh = 8.5 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.