ABSTRACT: Mesozoic Dinosauria and Related Reptiles from Western Colorado, the Abundance and Uses of a Scientific Treasury
Harley J. Armstrong
Since the first dinosaur from western Colorado was reported by the Hayden Survey in 1865, hundreds of dinosaur localities have been reported from Triassic, Jurassic, and Creteceous rocks of the area. Triassic dinosaurs are represented mainly by tracks from several formations, representing different paleo-ecosystems. Jurassic dinosaurs are represented mainly in the dinosaur-rich Morrison Formation. Many Cretaceous dinosaurs recently found represent a unique fauna consisting of large and small theropods, hadrosaurs, ceratopsians, and possibly ankylosaurs.
AAPG Search and Discovery Article #91002©1990 AAPG Rocky Mountain Section Meeting, Denver, Colorado, September 16-19, 1990