Fig. 16 in The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)

Fig. 16. Pharciceras tridens (Sandberger & Sandberger, 1850). A. Suture line of specimen MB.C.3618 (Ahlburg Coll.) from Oberscheld (Königszug Mine), at dm = 48.5 mm, ww = 19.0 mm, wh = 18.0 mm. B–E. Ontogeneric trajectories of the cardinal conch parameters. Abbreviations: see Material and methods. Scale bar units = 1 mm.