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Named By: Gasparini in 1997
Time Period: Middle Jurassic
Location: Argentina, Los Molles Formation
Size: Uncertain
Diet: Piscivore/Carnivore
Fossil(s): Complete skull and mandible (lower jaw) and some cervical (neck) vertebrae
Classification: | Chordata | Reptilia | Sauropterygia | Plesiosauria | Rhomaleos |

Maresaurus is an extinct genus of pliosaur from the Middle Jurassic (Bajocian) of what is now Argentina. The type species, Maresaurus coccai, was named by Gasparini in 1997. Recent phylogenetic analysis found Maresaurus to be a rhomaleosaurid.

Read more about Maresaurus at Wikipedia
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