Ticinosuchus ferox (Krebs 1965) Middle Triassic, ~ 230 mya, ~3 m in length, was derived from a sister to Vjushkovia and Arizonasaurus and was nested at the base of the aetosaurs, Stagonolepis and Aetosaurus.
Distinct from Vjushkovia, the skull of Ticinosuchus was relatively smaller with an essentially toothless pointed premaxilla and a shorter rostrum. The lacrimal was longer. The maxilla had a deeper convex curve. The naris was relatively larger. The antorbital fenestra was more deeply inset. The lateral temporal fenestra was shorter.
The cervicals and dorsals had shorter neural spines, but the caudal spines were slightly taller.
The scapula and coracoid were relatively smaller. The limbs were relatively more gracile. The calcaneal "heel" was relatively underdeveloped. |
