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Re: Microraptor hanqingi, new species from China.
On May 25, 2012, at 6:45 PM, Don Ohmes wrote:
> I suppose predictions made by tree-roosting might include 1) limited
> upstroke early on (that is, even after the appearance of a sophisticated
> gliding wing), 2) that the perching foot would appear subsequent to
> powered flight (full upstroke), not before -- and 3) the capability of
> climbing vertically.
Cool. Those seem consistent and reasonable.
> Given that the possibility of a tree-roosting lifestyle falsifies
> certain assertions about the relevance of "arboreal adaptions" to bird
> flight evolution, I think any statements that the "discussion" was not
> fruitful are wrong.
I did not mean to imply the discussion was not fruitful, only that it could be
more so with more specific predictions.
>> If your assertion is, instead, that we'd see no difference in the
> fossil record between a case a fully "terrestrial" origin and a
> "terrestrial + tree roosting" origin [...]
> Yes, that is my assertion, but relative only to pes morphology in small
> cursorial, feathered, vertical-climbing, etc, etc...
> I would think a strict ground-up scenario might predict a full
> wingstroke early on, even when wings are rudimentary -- but suppose that
> to be debatable.
Interesting thought. You might be right on that; worth considering.
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