Fig. 3 in Triassic coleoid beaks and other structures from the Calcareous Alps revisited

Fig. 3. Coleoid cephalopod Phragmoteuthis bisinuata (Bronn, 1859), overview of the hypothesized "beaks of P. bisinuata"; lower Carnian, Upper Triassic, Cave del Predil, NE Italy. A. GBW 2006/011/0009, an imprint of a proostracum, ink sac and "beaks" (A1), enlarged detail of the "beaks" (A2). B. GBA 2006/011/0041; isolated "beaks". C. GBW 2006/011/0001, "beaks" associated with the arm hooks (enlarged details of Fig. 2C), part (C1) and counter-part C2). Abbreviations: ah, arm hook; hb, hypothesized "beaks of P. bisinuata"; pro, proostracum; tp, "tubercle-like processes" of the hypothesized "beak of P. bisinuata". The "beak" strutures are interpreted herein as the cartilagenous vertebrate remains most likely of juvenile fish that was a prey of P. bisinuata.