The paper:
http://www.cnah.org/pdf_files/24.pdf

Actually it looks like the web site moved to .../pub/tod/...

So, check out Tod's "new" page:
http://www.bio.sdsu.edu/pub/tod/homepage.html

and check the following link for the data set:
http://www.bio.sdsu.edu/pub/tod/data_sets/phrynosoma.matrix

Cheers,
Wulf
-----
http://www.leiopython.de - the white-lipped python site -
http://www.herpers-digest.com - herp related eBooks search -