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Temporal range: Late Cretaceous
Illustration of the A. dalmaticus holotype
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Order: Squamata
Suborder: Scleroglossa
Superfamily: Varanoidea
Family: Aigialosauridae
Genus: Aigialosaurus
Kramberger, 1892
  • A. dalmaticus Kramberger, 1892 (type)
  • A. bucchichi Kornhuber, 1901

Opetiosaurus Kornhuber, 1901

Restoration of A. bucchichi
Restoration of A. dalmaticus

Aigialosaurus is an extinct genus of mosasauroid within the family Aigialosauridae. Its fossils have been found in Europe. It contains two species, Aigialosaurus dalmaticus and Aigialosaurus bucchichi.[1] Aigialosaurs were some of the oldest and most primitive ancestors of mosasaur and were closely related to monitor lizards.


  1. ^ Dutchak, Alex R.; and Caldwell, Michael W. (2009)."A redescription of Aigialosaurus (= Opetiosaurus) bucchichi (Kornhuber, 1901) (Squamata: Aigialosauridae) with comments on mosasauroid systematics". Journal of Vertebrate Paleontology 29 (2): 437-452.