Dinosaur lake: The story of the Purgatoire ValleyDinosaur Tracks the story of the Purgatoire Valley dinosaur tracksite area - Lockley, M. G. frey50; Fillmore, Barbara J.; Marquardt, Lori. (Denver, Colo. : Colorado GeologicalSurvey, 1997)
Includes bibliographical references (p. 60-64).
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Keywords: Dinosaur tracks -- Colorado -- Las Animas County; Dinosaurs -- Colorado -- Las Animas County