REFERENCES

Carroll, R. L. 1988. Vertebrate Paleontology and Evolution.  W. H. Freeman and Company, New York.

Gauthier, J. A. 1986. Saurischian monophyly and the origin of birds, p. 1-47. In Padian, K. (ed.), The Origin of Birds and the Evolution of Flight. Memoirs of the California Academy of Sciences, 8.

Sereno, P. C. 1986. Phylogeny of the bird-hipped dinosaurs (Order Ornithischia). National Geographic Research, 2:234-256.

Weishampel, D. B., Dodson, P., and Osmólska, H. (editors). 1990a. The Dinosauria. University of California Press, Berkeley.

Weishampel, D. B., Dodson, P., and Osmólska, H.  1990b. Introduction, p. 1-7. In Weishampel, D. B., Dodson, P., and Osmólska, H. (eds.), The Dinosauria. University of California Press, Berkeley.

Weishampel, D. B., Dodson, P., and Osmólska, H. 2004. Introduction, p. 1-3. In Weishampel, D. B., Dodson, P., and Osmólska, H. (eds.), The Dinosauria, second edition. University of California Press, Berkeley.