Fig. 4

Complete conch of the perisphinctid ammonite Subplanites sp. with its Strigogranulaptychus sp. from the early Tithonian of Wintershof near Eichstätt (Germany); conch diameter 90 mm; SNSB-BSPG 2014 XXI 79392. Photo reproduced from Keupp and Schweigert (2015: Fig. 415) with kind permission of F. Pfeil (publisher) and the authors