Ceresiosaurus

Ceresiosaurus, meaning "Lizard of Ceresio" (Ceresio is the name of the Lake Lugano, in Switzerland), is an extinct genus of aquatic sauropterygian reptile belonging to the nothosaur order. Its fossils have been found in Europe, and was named by Bernhard Peyer in 1931.

Ceresiosaurus lived during the Anisian stage of the middle Triassic.

Olivier Rieppel suggested that Ceresiosaurus is a synonym of ''Lariosaurus.