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Re: New Deinocheirus specimens found, indicating basal ornithomimosaur
Luis Rey <firstname.lastname@example.org> wrote:
> On top of that, it has a link to my very old Deinocheirus
> reconstruction. I have to say: I think my head was not too far off
> the "missing" material I might have heard the rumours of ..,
> I simply CAN't wait to have everything in my hands to do my own
> proper reconstruction.
Nor can I. (By which I mean I can't wait for YOU do a proper reconstruction.)
As a large and rather bulky herbivore, the "terrible" forelimbs that
give _Deinocheirus_ its name are incongruous. The manus is certainly
raptorial, and the forearm was capable of much more rotation than was
typical for ornithomimosaurs. Overall, the _Deinocheirus_ forelimb is
fairly slender - so it was unlikely to have been used to grasp or hold
prey (which would be odd for a herbivore in any case).
My guess is that _Deinocheirus_ used its long "raptorial" forelimbs as
a defensive weapon against approaching predators. Unlike the smaller
and more cursorial ornithomimosaurs, big _Deinocheirus_ wasn't blessed
with speed. So, like the comparably sized _Therizinosaurus_ (which
was probably even bulkier), _Deinocheirus_ might have used its long
forelimbs to help keep potential attackers at a safe distance.