1978. 2014-03-28T13:58:04Z. 2014-04-08T22:10:30Z. Luedke, Robert G. Dept. of the Interior, U.S. Geological Survey. English. Public. Arizona, New Mexico, and U.S. Cenozoic and From 65 million years ago.
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1981. 2014-04-01T14:48:20Z. 2014-04-15T22:13:37Z. Luedke, Robert G. Dept. of the Interior, U.S. Geological Survey. English. Public. California and Nevada. Cenozoic and From 65 million years ago.
1978. 2014-04-01T14:46:02Z. 2014-04-15T22:13:36Z. Luedke, Robert G. Dept. of the Interior, U.S. Geological Survey. English. Public. Colorado, Utah, and Wyoming. Cenozoic and From 65 million years ago.
1983. 2014-04-01T14:58:36Z. 2014-04-15T22:13:38Z. Luedke, Robert G. Dept. of the Interior, U.S. Geological Survey. English. Public. Idaho, Montana, Western, South Dakota, and Wyoming. Cenozoic.
1982. 2014-04-01T14:54:29Z. 2014-04-15T22:13:37Z. Luedke, Robert G. Dept. of the Interior, U.S. Geological Survey. English. Public. Oregon and Washington (State). Cenozoic and From 65 million years ago.
