Guanlong was a small
Theropod dinosaur. The animal was a
carnivore (meat-eater), and lived in China
during late Jurassic period,
about 160 million years ago.
It is (at the time of writing) the earliest known
Tyrannosaur - the group of dinosaurs that includes animals such as
Albertosaurus,
Alioramus,
Gorgosaurus,
Tarbosaurus, and, of course,
Tyrannosaurus rex.
Guanlong was small for a Tyrannosaur. It was only about 10 feet (3 meters) long.
It also had a couple of unusual features:
Unlike later Tyrannosaurs, Guanlong had three long fingers on each of its hands.
Guanlong had a large crest on its head, and it is after this feature that the animal
is named (in Chinese,
its name means "crown dragon").
Aside from its size and the above unusual features, Guanlong had many other features in common
with later Tyrannosaurs. One other interesting fact is that it may well have been covered with a coat
of primitive feathers - although there is no direct evidence for this, a closely related (but later)
Chinese Tyrannosaur, Dilong is known to have definitely had primitive feathers near its jaw and
tail.
Guanlong was a member of the Saurischia ("lizard-hipped") order of dinosaurs. What this means, is that although Guanlong was not closely related to lizards, it did have similarly shaped pelvic bones.
Guanlong was a Theropod - a member of a group of related bipedal dinosaurs that included the ancestors of birds (although Guanlong was not itself an ancestor of birds).
Guanlong lived about 160 million years ago, during the Jurassic period.
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