CRETACEOUS: 85 - 65 million years ago
most famous dinosaurs of all time are undoubtedly the large meat-eating
members of the Tyrannosauridae family. This family includes beasts
such as Nanotyrannus,
Albertosaurus, Gorgosaurus, Daspletosaurus, Tarbosaurus, and of the most
infamous of all, Tyrannosaurus rex. The emergence and subsequent
extinction of all tyrannosaurids was short-lived and occurred in only a 15
million year span in the Late Cretaceous Period. The first
reasonably complete skeleton of Tyrannosaurus was discovered in Montana,
U.S.A. in the year 1902.
arguments are ongoing today with differing understandings of the feeding
behavior of tyrannosaurs. Some argue their immense size,
musculature, lack of usable forelimbs, and olfactory abilities make them
more suited as scavengers. Still, most of the arguments FOR
scavenging are also supporting or irrelevant arguments in the defense of
these giant creatures being predators.
Absolute evidence is
still lacking for a definitive answer. It is most likely that
tyrannosaurs engaged in both predation and scavenging as it would have
taken an extraordinary amount of flesh to sustain these massive creatures
and any and all meat would have been a welcome meal. One thing is
for sure, whether scavenging a carcass or ambushing an unsuspecting
victim, nothing that walked the Earth would have messed with a
tyrannosaur. In their time, they had no equal.
that is not in dispute is the powerful muscular / skeletal anatomy of
tyrannosaurs and their impressive size in the larger types like T.
rex. Tyrannosaurs had well-developed belly ribs that possibly could
have supported the dinosaur's weight as it rested on its underside.
Its tail was long and robust, serving as a perfect counterbalance to its
had a distinctive two-fingered hand instead of the more common
three-clawed type. Their arms were strangely dwarfed and thin,
appearing useless. Their skulls were large in comparison to their
body size, and they possessed extremely powerful jaws. The design of the skull bones
enabled it to absorb great stress without damage. The large curved
teeth were serrated and thicker than other typical theropod teeth of
laterally compressed design. This enabled the teeth of tyrannosaurs
to puncture thick hide and tendons, crush bone with ease and hold up under
the extreme bite force of the jaw muscles.
Unscrupulous fossil dealers, in an effort to make a sale by "enhancing"
the identity of their offers, will call their Carcharodontosaurus
dinosaur fossils as from the "African T. rex" but there is
absolutely no relation between the two dinosaurs.
lived BEFORE T. rex and is not considered an ancestor or in the
same lineage as Tyrannosaurus rex.
tyrannosaurs have been found in North America and Central Asia.
dinosaur specimens we offer are not limited to what is just shown here.
Please inquire as to any of your specific needs.
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