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Tyrannosauridae
Tyrannosauridae
(or
tyrannosaurids
, meaning "
tyrant
lizards") is a
family
of
coelurosaurian
theropod
dinosaurs
which comprises two subfamilies containing up to eleven
genera
, including the
eponymous
Tyrannosaurus
. The exact number of genera is controversial, with some experts recognizing as few as three. All of these animals lived near the end of the
Cretaceous
Period
and their
fossils
have been found only in
North America
and
Asia
.
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