Muraenosaurus

Muraenosaurus ('moray eel lizard') is an extinct genus of sauropterygian reptile, from the Middle Jurassic of Europe. Fossils have been found in England and France.

Muraenosaurus grew to around 6 meters (20 ft) long, with around half of that length being taken up by the animal's neck, which possessed 44 vertebrae. Behind the neck, Muraenosaurus had a short, relatively inflexible body and powerful flippers. The head was remarkably small compared to the overall size of the animal, being only around 37 centimeters (15 in) long.