Fig. 6 in An Early Triassic gladius associated with soft tissue remains from Idaho, USA-a squid-like coleoid cephalopod at the onset of Mesozoic Era

Fig. 6. Coleoid cephalopod Idahoteuthis parisiana Doguzhaeva and Brayard gen. et sp. nov. (holotype, UBGD 30545); middle Olenekian, Early Triassic; Idaho, USA; views on the canalicular structure of fin-supported cartilages (A–D).