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Re: DIGIT LOSS INQUIRY



>Loss of a digit has proved to be, I believe, pretty much irreversible among
>    dinosaurs. So it should have a very strong weight in phyletic analysis.


Isn't this circular?  Phylogenetics shows us that all transitions in digit
count are losses, not gains.  Therefore, digit loss should be upweighted in
phylogenetics.





------------------------
Christopher A. Brochu
Assistant Professor
Department of Geoscience
University of Iowa
Iowa City, IA 52242

christopher-brochu@uiowa.edu
319-353-1808 phone
319-335-1821 fax