Lusonectes sauvagei

Lusonectes is an extinct genus of microcleidid plesiosaur from the Early Jurassic (Toarcian) São Gião Formation of Portugal. It is known from a single partial skull and mandible. Originally described as a plesiosaurid, later studies have proposed affinities with microcleidids or early pliosaurids, though its exact position remains uncertain due to the fragmentary nature of the material.