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Re: New paper on pre-Archaeopteryx coelurosaurian dinosaurs
On Wed, Oct 27, 2010 at 12:59 PM, <email@example.com> wrote:
> I thought Gigantoraptor was ~2 tonnes, much smaller than e.g. Tyrannosaurus
> or Spinosaurus. Has its size been revised upwards?
I was going by Senter and Robins (2010), who looked at the heights of
theropods based on hindlimb length. _Gigantoraptor_ has a hip height
of 3.5m, which would have made it among the tallest of theropods.
Though not as tall as the largest _T. rex_, such as "Sue", which has a
hip height of around 4m.
In their original description of _Gigantoraptor_, Xu et al. (2007)
estimate the weight of the animal based on femoral circumference,
which may underestimate the mass of non-avian dinosaurs (Carrano,
2001). Although the skeletal proportions suggest that _Gigantoraptor_
was a cursorial animal, and fairly slender for its size, if it was a
foraging herbivore, then it would have had a huge (and very heavy)