Fig. 93 in The ammonoids from the Gattendorfia Limestone of Oberrödinghausen (Early Carboniferous; Rhenish Mountains, Germany)

Fig. 93. Weyerella molaris (Vöhringer, 1960) from the Oberrödinghausen railway cutting. A. Cross section of specimen BGR X4643 (Schmidt 1921 Coll.). B. Cross section of paratype GPIT-PV-63961 (Vöhringer Coll.) from bed 2. C. Cross section of specimen MB.C.31179.1 (Vöhringer Coll.) from bed 2. D. Cross section of specimen MB.C.31181.1 (Vöhringer Coll.) from bed 3c. E. Cross section of specimen MB.C.31182.1 (Vöhringer Coll.) from bed 3d. F. Cross section of specimen MB.C.31181.2 (Vöhringer Coll.) from bed 3c. G. Cross section of specimen MB.C.31179.2 (Vöhringer Coll.) from bed 2. H. Suture line of paratype GPIT-PV-63961 (Vöhringer Coll.) from bed 2, at ww = 7.4 mm, wh = 7.4 mm. I. Growth line course of holotype GPIT-PV-63930 (Vöhringer Coll.) from bed 3c, at ww = 7.0 mm, wh = 7.6 mm. J. Internal shell thickening course of paratype GPIT-PV-63960 (Vöhringer Coll.) from bed 2, at wh = 8.2 mm. K–M. 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.