Mollesaurus

Mollesaurus is an extinct genus of large ophthalmosaurine ichthyosaur known from northwestern Patagonia of Argentina.

== Etymology == Mollesaurus was named by Marta S. Fernández in 1999 and the type species is Mollesaurus periallus. The generic name is derived from the name of the Los Molles Formation, where the holotype was collected, and sauros, Greek for "lizard". The specific name is derived from periallos, Greek for "before all others", in reference to the fact that it is the oldest ophthalmosaurid and one of the oldest thunnosaurs.