Subject: Devonian Geologic Period / Year: 1950 - Yale University Library GeoBlacklight Search Results

Start Over Subject Devonian Geologic Period Year 1950

1. Stratigraphy of the Upper Devonian Wiscoy sandstone and the equivalent Hanover shale in western and central New York

1950. 2018-01-23T16:27:13Z. 2018-01-23T16:27:13Z. Pepper, James F. U.S. Dept. of the Interior, Geological Survey. English. cartographic image. Public. New York (State), New York (State), Western, and New York, Western. Devonian and From 345 to 405 million years ago.