| Why
is this dinosaur a cast while the other fossil bones on display
in Dinosaur Hall are mostly real? The bones of the other dinosaurs
in our exhibits are much stronger than the bones of the new
oviraptorosaur. The new dinosaur's bones are so fragile that
they would not hold up to being mounted for display. Recreating
the dinosaur as a cast allows CMNH scientists to study the
real – and extremely fragile! – fossils in a safe
environment, while still allowing us to mount the dinosaur
for display in our exhibit.
Contrary
to what many people believe, only a few dinosaurs are known
from essentially complete skeletons. This oviraptorosaur
is no exception – it is known from two specimens, neither
of which is totally complete. However, each of these incomplete
skeletons includes some bones that are not preserved in the
other. These dinosaurs belong to the same species because
the bones they have in common are nearly identical. These
two specimens were combined to create the single oviraptorosaur
skeletal cast on display.
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