1) Hantzchel, A. 1968. Coprolites; An Annotated Bibliography. Geological Society of America, Inc., Colorado, United States, Pgs 1-6

2)Sargeant, W.A.S. 1975. Fossil Tracks and Impressions of Vertebrates. Springer-Verlag. New York, N.Y., United States, Pgs 317-319

3)Pollard J.E. 1990. Paleoecology, Evidence for Diet. Blackwell Sci. Publ... Oxford, United Kingdom, Pgs 362-367

4)Hunt P.A., K. Chin, M.G. Lockley. 1994. The Paleobiology of Vertebrate Coprolites. Johns Hopkins University Press. Baltimore, MD, United States/John Wiley and Sons-Chichester United Kingdom, Pgs 221-239

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