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Science 24 March 1967:
Vol. 155. no. 3769, pp. 1539 - 1541
DOI: 10.1126/science.155.3769.1539
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Articles

Baja California: Late Cretaceous Dinosaurs

William J. Morris 1

1 Department of Geology, Occidental College, Los Angeles, California

Late Cretaceous dinosaurs have been discovered along the Pacific margin of Baja California. The presence of Hypacrosaurus sp. is suggestive of correlation with the Upper Edmonton Formation, Alberta. Dissimilarities between the Baja California fauna and those from contemporary units along the eastern trend of the Rocky Mountains suggest that Baja California was ecologically separated from mainland Mexico during late Campanian and early Maastrictian time.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)