(1986). Dinosaur Valley: Colorado's New Paleontological Museum. Rocks & Minerals: Vol. 61, No. 2, pp. 79-83.

T WAS contended by Colorado, in Wyoming v. Colorado,' and again, so it is reported, in the Colorado River Jnterstate Treat, negotiations, that because the continental divide-ihere so many of the rivers of the surrounding states have their source-is in Colorado, therefore all the water of those river

Individuals may obtain valuable information about the presence of predators by eavesdropping on heterospecific alarm signals. While playback studies have demonstrated that similarly-sized and taxonomically-related species may respond to the calls of each other, less work has been done to define the