Name Acteosaurus
Class Chordata,‭ ‬Reptilia, Scleroglossa
Name Translation Actaeon Lizard
Period Cenomanian (Cretaceous)
Location Slovenia
Diet Carnivore
Size Unknown

Acteosaurus is an extinct genus of aquatic lizard that lived in the Late/Upper Cretaceous Period. Its species, A. tommasinii and A.crassicostatus, were described in 1860 and 1993. Though A.crassicostatus is probably a junior synonym for Adriosaurus suessi, A.tommasinii was found to be similar to coniasaurs, mosasauroids, and a sister taxon to modern snakes in 2010.[1]

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