Fig. 19. Pharciceras kayseri Wedekind, 1918. A in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

Fig. 19. Pharciceras kayseri Wedekind, 1918. A. Suture line of specimen MB.C.30235.1, probably from Oberscheld, at ww = 18.0 mm, wh = 20.0 mm. B–E. Ontogeneric trajectories of the cardinal conch parameters. Abbreviations: see Material and methods. Scale bar units = 1 mm.