Hypsilophodon was a herbivore (plant-eater), about 4 to 7 feet (1.2 to 2.1 meters) long.
About 20 perfect
fossilized skeletons of
Hypsilophodon
have been
found together in the Isle of Wight,
England, so it seems likely that
these animals must have lived and died together. Scientists therefore believe
that Hypsilophodon lived in herds.
The first remains of Hypsilophodon were discovered in 1849,
but were incorrectly believed to be a young
Iguanodon.
Only in 1870, was Hypsilophodon properly described (by T.H. Huxley) after
he had been provided with a number of
fossils
skeletons by Rev. William Darwin Fox.
For almost a century, Hypsilophodon was thought to have
been tree-dwelling, much like a modern tree-kangeroo.
However, in the 1970s, the skeleton was reexamined,
and most scientists now believe that there is in fact no evidence that
Hypsilophodon
lived in the trees - in fact, it seems more likely that Hypsilophodon
is actually a fast runner.
"Hypsilophodon" means "high-crested tooth". This name was chosen by T. H. Huxley in 1869.
Hypsilophodon was a member of the Ornithischia ("bird-hipped") order of dinosaurs. What this means, is that although Hypsilophodon was not closely related to birds, it did have similarly shaped pelvic bones.
Hypsilophodon lived between about 125 million years ago and 120 million years ago, during the Cretaceous period.
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