together with its large size

and an elongated head with a narrow snout

Its position in the evolution of archosaurs shows a combination of primitive and derived characteristics: primitive in their bone structure and partial posture

comes from the Tupi-Guarani and means "the one who lives in the water"

The premaxilla

Besanosaurus leptorhynchus Variant:Primed together with its large sizeBesanosaurus leptorhynchus was an ichthyosaur that inhabited the seas of the Middle Triassic, approximately 240 million years ago, in what is now northern Italy. Fossils of this species were discovered in the Besano region, from which it takes its name, within the Besano Formation, a site known for its exceptional preservation of marine fossils. This species was formally described in 1996, and has since been the subject of studies due to its