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Re: polarity of bipedality in dinosaurs
From: "Jonathan R. Wagner" <email@example.com>
> >...The presence of the extra digits hampers the airfoil and, as you
> >note below, adds unnecessary weight to the wing.
> Excess digits don't seem to hamper bats,
Except that bats don't really have any "excess" fingers - they are
all used as *part* *of* *the* *wing*. In the protobirds only one finger
was involved in the wing, the others *were* excess as far as flight
The peace of God be with you.