Fig. 47 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Fig. 47. Stockumites exilis (Vöhringer, 1960) from the Oberrödinghausen railway cutting. A. Cross section of paratype GPIT-PV-63933 from bed 3d. B. Suture line of paratype GPIT-PV-64018 from bed 3c, at dm = 13.0 mm, ww = 8.1 mm, wh = 7.3 mm. C. Constriction course of paratype GPIT-PV-64018 from bed 3c, at dm = 9.5 mm, ww = 6.0 mm, wh = 5.5 mm. D. Constriction course of holotype GPIT-PV-63868 from bed 4, at dm = 15.6 mm, ww = 9.2 mm, wh = 8.3 mm. E–G. 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.