1998. 2002-06-01T04:00:00Z. 2005-02-18T21:45:32Z. Geological Survey (U.S.). The Survey ; Information Services [distributor]. English. Public. Colorado and Utah. Jurassic.
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1989. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey ; For sale by Map Distribution. English. Public. Utah, Arizona, New Mexico, and Wanakah Formation. Jurassic.