It doesn't get any better than this:
M. T. Antunes, A. C. Balbino, and L. Ginsburg, 2006.
Miocene Mammalian
Footprints in Coprolites from Lisbon, Portugal. Annales de
Paleontologie V. 92, 13-30.
Enjoy,
Carl
Carl Mehling
Fossil Amphibian, Reptile, and Bird Collections
Division of Paleontology
American Museum of Natural History
Central Park West @79th Street
New York, NY 10024
(212) 769-5849
Fax: (212) 769-5842
cosm@amnh.org