Redondasaurus had a long snout, compromising 81% of the length of the skull in the largest known specimen, a single 80 cm (31 in) long skull from the Upper Chinle Formation, New Mexico. It likely spent most of its time in lakes and rivers, and ambushed its prey, which consisted of fish, small reptiles, and possibly dinosaurs. The enamel in the teeth of Redondasaurus has a columnar microstructure.
^Late Palaeozoic and Early Mesozoic Circum-Pacific Events and their Global Correlation (World and Regional Geology); page 219. By J. M. Dickins, Yang Zunyi, Yin Hongfu, and S. G. Lucas. Published 1997, Cambridge University Press. ISBN 0-521-47175-3 Retrieved on 2008-04-24