Fig. 10From: Pseudoinversion of septal sutures in Middle Jurassic–Lower Cretaceous non-heteromorph ammonitesDelphinites alatyrensis (Kemper), with normal sutural pseudoinversion affected some suture lines but disappearing later. Lower Valanginian, Undulatoplicatilis Zone, Mishukovo, Chuvashia, specimen no. GGM II-117/841. a—Natural size, b—enlarged (scale bar = 1 cm)Back to article page