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Something Old, Something New...
Hi All -
A couple new papers have recently come to my attention:
Wagner, G.P. and Gauthier, J. 1999. 1,2,3 = 2,3,4: a solution to the
problem of the homology of the digits in the avian hand. _Proceedings of
the National Academy of Sciences_ 96(9): 5111-5116.
Those of you at the last SVP meeting will doubtlessly remember
Gauthier's talk on the idea of a frame shift during embryogenesis somewhere
between near-avian theropods and actual avian theropods that could explain
the apparent dichotomy between paleontological and
neontological/embryological evidence for the identities of both theropod
and bird hands...although I haven't seen the whole paper yet, this seems to
be it. You can see the abstract on-line via http://www.pnas.org .
Also in that same issue, a rebuttal:
Feduccia, A. 1999. 1,2,3 = 2,3,4: accomodating the cladogram.
_Proceedings of the National Academy of Sciences_ 96(9): 4740-4742.
This one I have seen, and while I don't agree with a lot of what Feduccia
says in this article (and he's a tad harsher than I would have been), I do
agree with him that the issue isn't settled (about the digital homologies,
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Jerry D. Harris
Fossil Preparation Lab
New Mexico Museum of Natural History
1801 Mountain Rd NW
Albuquerque NM 87104-1375
Phone: (505) 841-2809
Fax: (505) 841-2866