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On Thu, 31 Jul 1997, Nick Longrich wrote:
> > But remember that it is much easier to >lose< digits
> > through vestigialization than it is to >regain< lost digits. How many
> > mammals
> > have six-digit hands these days, besides pathological cases? Not even
> > cetaceans. But how many have four, three, two, and one-digit hands? Most
> > ferungulates, for starters. So: digital loss is like an evolutionary one-way
> > sign. Happens easily one way, but seldom if ever the other way.
> This might be relevant if segnosaurs had actually lost the digit.
this should, of course, read "if *theropods* had actually lost the
digit", to make any kind of sense.