iguanodon(redirected from Heterosaurus)
Also found in: Thesaurus, Encyclopedia.
A large herbivorous ornithiscian dinosaur of the genus Iguanodon of the Cretaceous Period, having a long broad snout with a horny beak, numerous small teeth, and a spike on each thumb.
(Palaeontology) a massive herbivorous long-tailed bipedal dinosaur of the genus Iguanodon, common in Europe and N Africa in Jurassic and Cretaceous times: suborder Ornithopoda (ornithopods)
[C19: New Latin, from iguana + Greek odōn tooth]
i•guan•o•don(ɪˈgwɑ nəˌdɒn, ɪˈgwæn ə-)
a bipedal, plant-eating dinosaur, of the genus Iguanodon, that inhabited Europe in the early Cretaceous Period.