Baja California: Late Cretaceous Dinosaurs

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Science  24 Mar 1967:
Vol. 155, Issue 3769, pp. 1539-1541
DOI: 10.1126/science.155.3769.1539


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.