Altirhinus

Iguanodon orientalis skull

Iguanodon means "Iguana tooth". It is classified as: Ornithopoda; Iguanodontia; Iguanodontidae

Early Cretaceous (Aptian), Barum Bayan Formation

Discovered in the Gobi Desert, Southwestern Mongolian Peoples' Republic.

Its hands had four fingers and a spike-like thumb, which it may have used to defend itself. Its teeth are reminiscent of those in hypsilophodonts, flattened side to side, and leaf-shaped. They probably sliced up plant material like a pair of scissors.

Because of the large number of skeletons of these dinosaurs frequently found together and evidence from fossil trackways, paleontologists think they may have formed herds. Their remains are most often found in sediments deposited in swampy, lake, and river edge environments suggesting that is the place they spent most of their time munching on horsetails (like the living Equisetum), ferns, cycads, and various kinds of conifers.

Iguanodon orientalis from Mongolia (above) is very similar to iguanodonts from Europe (below) except for its huge, bulbous 'nose.' This hollow structure may have been used as a resonating chamber for making 'dinosaur music or mating calls.

This skull measures 90cm in length

Cast in resin.

$975

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