Xiphodracon is an extinct genus of leptonectid ichthyosaurian known from the Early Jurassic Charmouth Mudstone Formation of the United Kingdom. The genus contains a single species, Xiphodracon goldenc

Excalibosaurus is a monotypic genus of marine prehistoric reptiles that lived during the Sinemurian stage of the Early Jurassic period in what is now England. It is characterized by the extreme elonga