Blasisaurus

Blasisaurus is a genus of lambeosaurine hadrosaurid dinosaur from the Late Cretaceous. It is known from a partial skull and skeleton found in late Maastrichtian-age rocks of Spain. The type species is Blasisaurus canudoi, described in 2010 by Penélope Cruzado-Caballero, Xabier Pereda-Suberbiola and José Ignacio Ruiz-Omeñaca, a group of researchers from Spain.

Blasisaurus is a medium sized Euornithopod. The describers have been able to identify two distinct features: the cheekbone has a rear projection with a hook-shaped upper edge, and the lower sleep window is narrow and D-shaped. From the same formation is Arenysaurus, a related species. They are not identical, distinguished by the shape of the teeth and missing secondary ridges. Blasisaurusalso differs from Koutalisaurus by a downwardly bent front edge of the lower jaws.