Length: up to 9m
Period: Late Cretaceous
Time Span: 75 Million Years Ago
Affordable, but none the less beautifully modelled and finished range of dinosaur models from CollectA brand. Hand-painted and finely detailed. A great range to collect for any dinosaur fanatic!
Material from both Bistahieversor adolescent and adult individuals has been found in the Kirtland Formation of New Mexico, United States. Adult Bistahieversor are estimated to have been around 9 metres (30 ft) long, weighing at least a ton. The snout is deep, indicating that the feature is not unique to more derives tyrannosaurs such as Tyrannosaurus. Geographical barriers such as the newly forming Rocky mountains may have isolated the more southerly Bistahieversor from more derived northern tyrannosaurs.
Bistahieversor differs from other tyrannosaurs in the possession of 64 teeth, an extra opening above the eye, and a keel along the lower jaw. The opening above the eye is thought to have accommodated an air sac that would have lightened the skull's weight. Bistahieversor also had a complex joint at its "forehead" that would have stabilized the skull, preventing movement at the joint.
Suitable for ages: 3 plus
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