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Re: The uses of sickle claws
> From: Jonathon Woolf <firstname.lastname@example.org>
> > Michael wrote:
> > > Did dromeosaurs weigh anything like Smilodon fatalis?
> > Depends on the species; _S. populator_ seems to have gotten quite a bit
> > bigger than _S. fatalis_, and _S fatalis_ was already pretty big. I
> > imagine the weight ranges of dromies and _Smilodon_ would overlap to a
> > fair extent.
> _S. fatalis_ seems to have been the size of a modern lioness, but more
> heavily built with unusually thick bones, putting its mass in the
> 150-200kg range. _S. populator_ was a third again the size of
> _fatalis_, meaning it could go as high as 250kg.
> I saw some of Dinamation's life-size models of _Velociraptor_ once, and
> can't see how they could mass any more than a large wolf -- say,
> 40-50kg. If anything, I favor the smaller end of that range,
> considering the slender build and long tail. _Deinonychus was larger, I
> know, but not _that_ much larger, so I reckon it probably massed around
> 80kg or so. _Utahraptor_ I don't know about; I'm not clear on how large
> it was. My guess is that the known species of dromaeosaur neatly
> bracketed _Smilodon's_ size range, _Deinonychus_ smaller and
> _Utahraptor_ larger.
So what's the niche of those predators surrounding T rex? Were they
the hyena of their day? Did T rex serve as the lion of the day?