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On Mon, Oct 10th, 2011 at 1:07 PM, Jaime Headden <firstname.lastname@example.org> wrote:
> There was the idea that they were useful for digging (not usueful at all,
> being thin) or for
> "hooking" vegetation (which would ask for strong curvature), but even so, it
> makes odd sense to
> evolve great size, apparent herbivore traits, and then large thin unguals not
> just on the hands
> but the feet also.
The claws of therizinosaurs seem to compare quite well in general form to those
of giant anteaters.
The anteater claws are slightly more recurved, but perhaps being quadrupeds
they are using their
claws at a different angle than that which therizinosaurs used theirs.
Therizinosaur claws may have been too thin to make effective digging spades
(ruling out a
burrowing lifestyle - if their size hadn't already done so), so perhaps they
were better suited for
more of a tearing function. Such claws may have been equally useful against
insect nests, rotten
logs, cycads (full of starchy pith), carcasses, or theropod faces.
Spatial Data Analyst Australian Dinosaurs
Melbourne, Australia http://home.alphalink.com.au/~dannj