Figure 1
From: Skeletal pathologies track body plan evolution in ichthyosaurs
Examples of pathological bone modifications detected in ichthyosaur skeletons from the Middle Triassic Besano Formation of the Swiss-Italian Alps. (a,b) Anatomical representation of a shastasaurid (a) and a mixosaurid ichthyosaur (b) showing the affected areas. (c–e). Healed trauma in the dentary of an indeterminate shastasaurid (PIMUZ T 39). (f) Articular disease affecting the zygopophyseal region in the apical region of the tail of Mixosaurus (BES SC, unregistered specimen). (g,h) Ankylosis in the hind limb metapodial elements of Besanosaurus (BES SC 999). (i) Ankylosis of the proximal tarsals in the hind limb of Mixosaurus (PIMUZ T 2417). (j) Healed trauma with evidence of bone remodeling in the premaxilla of Mixosaurus (PIMUZ T 2140).
