Thaumatodracon is a genus of rhomaleosaurid pliosaur from the early Jurassic found in the United Kingdom.

[1] In early 1969, German amateur paleontologist Kurt Wiedenroth at the coast of Dorset between Lyme Regis and Charmouth discovered a plesiosaur skeleton.

In 2011, plesiosaur experts Ricardo Miguel Nóbrega Araújo and Adam Stuart Smith visited the Hannover museum.

It consists of a partial skeleton containing the skull, the lower jaws and a complete series of twenty-seven neck vertebrae.

Additionally a thirty-five centimetres long block was salvaged, the matrix possibly still surrounding vertebrae or pectoral girdle elements.