Eotyrannus was a carnivore (meat-eater) that lived during the
Cretaceous period,
about 125 to 120 million years ago.
Its fossils
have been found in the Isle of Wight in Southern
England.
Eotyrannus was an early relative of
Tyrannosaurus rex.
It was much smaller than Tyrannosaurus rex -
Eotyrannus was "only" about 20 feet (6 meters) long.
Additional differences between
Eotyrannus and
Tyrannosaurus rex,
include the fact that Eotyrannus was very lightly built, and had long grasping hands (whereas
Tyrannosaurus rex had relatively puny arms).
Eotyrannus probably preyed upon
Hypsilophodon and
Iguanodon,
which both contemporaries of Eotyrannus, and lived in some of the same areas.
"Eotyrannus" means "dawn tyrant". The name refers to the fact that it was an early relative of Tyrannosaurus rex.
Eotyrannus was a member of the Saurischia ("lizard-hipped") order of dinosaurs. What this means, is that although Eotyrannus was not closely related to lizards, it did have similarly shaped pelvic bones.
Eotyrannus was a Theropod - a member of a group of related bipedal dinosaurs that included the ancestors of birds (although Eotyrannus was not itself an ancestor of birds).
Eotyrannus lived between about 125 million years ago and 120 million years ago, during the Cretaceous period.
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