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Re: Yet more on pterosaur quad arm posture
In a message dated 7/2/13 10:29:09 PM, email@example.com writes:
<< It is sheer fantasy to suggest
that Archaeopteryx_, _Microraptor_, etc were specialized arborealists. >>
It is sheer fantasy to keep Microraptor primarily on the ground. High res
photos of numerous central toe claws (and all the rest) shwo they are
strongly arced in the manner found only in birds that do not walk much on the
ground. All modern birds that walk a lot on the ground have flatter claws, I've
looked at them all (there are not really that many of them) plus previous
That makes sense since sinornithosaurs lived in heavily forested habitats,
and their enromous foot feathers would have hindered walking and been
damaged doing so.
Archaeopteryx is more complicated.
Even assuming basal dinofliers could take off from the ground does not mean
they were not arboreal. Almost all arboreal birds can take off from ground.