Iguanodon (Ig-wah-no-don), Iguana tooth, lived in the Early Cretaceous of Europe. Numerous fossils of iguanodonts have been referred to Iguanodon from around the world. The current trend is assign these to related but separate genera.
Genera and Species
Classification: Ornithopoda, Iguanodontoidea.
Species: I. bernissartensis, I. atherfieldensis, I. dawsoni, I. fittoni, I. anglicus, I. hillii, I. lakotaensis, I.ottingeri.
Senior synonyms: I. seelyi, I. orientalis, Proiguanodon.
Iguanadon was an herbivore with an elongated horse-like head, rows of grinding teeth, and may have had a long tongue. The development of complex dental batteries to process food continues through the Cretaceous culminating in the duckbills of the Late Cretaceous. Its forelimbs were about half to three quarters the length of its hind limbs, and the fingers end in hooves rather than claws, with a large spike on the thumb. While it could walk or rest on four feet for speed it ran using its longer back legs.
LENGTH: 6 - 11 m (20 - 36 ft).
WEIGHT: 1 - 3 tons.
It was plant eater feeding at low to medium height. It is thought to have moved in herds based on fossil track ways.
History of Discovery
Formally described by Boulenger vide van Beneden in 1881. The first species was found in 1822 and was only the second dinosaur to be named.
It lived in herds near lakes in warm swampy country. The spread of iguanodonts in the Early Cretaceous of Laurasia is often associated with the spread of flowering plants.
Paul, G. (2010). The Princeton Field Guide to Dinosaurs (pp. 6574). Princeton, New Jersey: University Press Princeton.
Worth, G. (1999). The Dinosaur Encyclopaedia (pp. 1185). Scarborough, Western Australia: HyperWorks Reference Software.
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