It is the most basal known true ichthyosaur, shaped more or less like a dolphin. The long-snouted head is small in comparison with the rest of the body, as in basal ichthyosaurs such as "Mixosaurus" and "Cymbospondylus". The tail is sharply turned downwards, in common with more advanced ichthyosaurs, with a small vertical fluke. It may have had a small dorsal fin. 