iguanodon

 
Pronunciation: /ɪˈgwɑːnədɒn/

noun

  • a large partly bipedal herbivorous dinosaur of the early to mid Cretaceous period, with a broad stiff tail and the thumb developed into a spike.
    • Genus Iguanodon, infraorder Ornithopoda, order Ornithischia

Origin:

modern Latin, from iguana + Greek odous, odont- 'tooth' (because its teeth resemble those of the iguana)