Fig. 33 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

Fig. 33. Extropharciceras becheri (von Buch, 1832). A. Cross section of specimen MB.C.30247 from Oberscheld. B. Suture line of specimen MB.C.3613 (Koch Coll.) from Oberscheld (Anna Mine), at dm = 40.0 mm, ww = 14.5 mm, wh = 12.5 mm. C–F. Ontogeneric trajectories of the cardinal conch parameters. Abbreviations: see Material and methods. Scale bar units = 1 mm.