Wimanius is a mixosaurian ichthyosaur, and the only genus in the family Wimaniidae. It existed during the Triassic Period in what is now Switzerland. It was described by Maisch and Matzke in 1998 based on fossils found in the Monte San Giorgio Formation, and the type species is Wimanius odontopalatus.[2][3] It was a small ichthyosaur, measuring 1 m (3.3 ft) long and weighing 4 kg (8.8 lb).[4]