The skull of " Hypsilophodon " was short and relatively large.
2.
Thus, the only certain member at this time is " Hypsilophodon ".
3.
The generic name honours the first describer of " Hypsilophodon ", Gideon Mantell.
4.
A long-lived misconception concerning the anatomy of " Hypsilophodon " has been that it was armoured.
5.
He found it to be most like " Hypsilophodon ", from the Lower Cretaceous Wealden of England.
6.
It would have been a fast, agile predator, preying mainly on species such as Valdosaurus and Hypsilophodon, also found on the Isle of Wight.
7.
For these reasons, the hypsilophodonts, particularly " Hypsilophodon ", have often been referred to as the " deer of the Mesozoic ".
8.
Owen was not convinced by Huxley's conclusion that " Hypsilophodon " represented a different genus and in 1874 renamed the species " Iguanodon foxii ".
9.
Besides the remains of " Hypsilophodon " itself, the vertebrate fossil fauna of the " Hyspilophodon Bed " is limited to some scutes from a crocodylomorph and a turtle.
10.
It was a small bipedal animal with an omnivorous diet . " Hypsilophodon " reached up to in length, weighed about 20 kg ( 45 lbs ), and was an agile runner.