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Hungarosaurus tormai (hungar = named for Hungary, Greek sauros = lizard, species named for Andras Torma; Osi, 2005) is a nodosaurid ankylosaur from the Upper Cretaceous (Santonian) Csehbanya Formation of the Bakony Mountains of western Hungary. It is the most completely known ankylosaur from the Cretaceous of Europe. Cladistic analysis on the taxon indicates that it is a basal member of the Nodosauridae, more derived than Struthiosaurus (another European nodosaurid), yet still more primitive than North American forms such as Silvisaurus, Sauropelta, and Pawpawsaurus. The length of Hungarosaurus is estimated to have been about 4 meters. The skull of this dinosaur is estimated to have been 32-36 cm. in length. Like all nodosaurids, Hungarosaurus was herbivorous. Ankylosaur material has been known from Europe since the 19th century, with finds having been previously made in England, Austria, western Romania, France, and northern Spain.