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  1. Hunt, Robert M., Jr., 1941- [Author]; Stepleton, Ellen. [Author]

    Geology and paleontology of the Upper John Day beds, John Day River Valley, Oregon : lithostratigraphic and biochronologic revision in the Haystack Valley and Kimberly areas (Kimberly and Mt. Misery quadrangles). Bulletin of the AMNH ; no. 282 ; John Day Formation

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    New York, NY : American Museum of Natural History, 2004

  2. Albright III, L. Barry; Woodburne, Michael O.; Fremd, Theodore J.; Swisher III, Carl C.; MacFadden, Bruce J.; Scott, Gary R.

    Revised Chronostratigraphy and Biostratigraphy of the John Day Formation (Turtle Cove and Kimberly Members), Oregon, with Implications for Updated Calibration of the Arikareean North American Land Mammal Age

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    University of Chicago Press, 2008

    Published in: The Journal of Geology