Fig. 99 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Fig. 99. Hasselbachia multisulcata (Vöhringer, 1960) from the Oberrödinghausen railway cutting (A-C, F, G) and the Hasselbachtal section (D, E; after Korn & Weyer 2003). A. Cross section of paratype GPIT-PV-63938 (Vöhringer Coll.) from bed 3e. B. Cross section of paratype GPIT-PV-63949 (Vöhringer Coll.) from bed 3d. C. Cross section of paratype GPIT-PV-64017 (Vöhringer Coll.) from bed 3e. D. Cross section of specimen MB.C.5240.2 (Weyer 1993–1994 Coll.) from bed 57. E. Cross section of specimen MB.C.5240.3 (Weyer 1993–1994 Coll.) from bed 57. F. Suture line of paratype GPIT-PV-64017 (Vöhringer Coll.) from bed 3e, at dm = 8.8 mm, ww = 7.7 mm, wh = 4.3 mm. G. Growth line course of holotype GPIT-PV-63911 (Vöhringer Coll.) from bed 3e, at 13.2 mm dm, 10.0 mm ww, 7.0 mm wh. H–J. 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 (holotype of Hasselbachia gracilis as grey dots). Scale bar units = 1 mm.