[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: thoughts on Pterasaur feet
Adam Yates wrote:
> Interesting thought, perhaps it was a nonfunctionalgenetic consequence of
> elongation in the forelimb. Much like the enlarged but unused tibial
> sesamoid of Pandas (the homologous forelimb bone, the radial sesamoid, is
> enlarged for use as a "thumb" - see Gould's "The pandas thumb"). For this
> to be true though, the didgits would have to be homologous ie, both
> fourth and fifth, unfortunately I don't think this is the case.
wouldn't it be likely this fusing of the 5th and 4th finger have occured
AFTER it was used functionally as a wing? To give strength?
If that's the reason why the fingers fused, why would this fusing
invalidate the homologous-mess of the long-toe?
(I don't understand the full implications of 'homologous' in this
the reply-to in this e-mail is a spam trap
mail e-mail replies to firstname.lastname@example.org