01921oam 2200517Ia 450 991069614890332120070925152248.0(CKB)5470000002375322(OCoLC)75968168(EXLCZ)99547000000237532220061114d2006 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierA USGS zonal table for the Upper Cretaceous middle Cenomanian-Maastrichtian of the Western Interior of the United States based on ammonites, inoceramids, and radiometric ages[electronic resource] /by William A. Cobban ... [and others]Version 1.0.Reston, Va. :U.S. Geological Survey,2006.46 pages digital, PDF fileOpen-file report ;2006-1250Title from PDF title screen (viewed on Nov. 14, 2006).Includes bibliographical references (pages 36-46).PaleontologyCretaceousPaleontologyUnited StatesGeology, StratigraphicCretaceousGeologyUnited StatesAmmonoideaUnited StatesInoceramidaeUnited StatesRadioactive datingUnited StatesPaleontologyPaleontologyGeology, StratigraphicGeologyAmmonoideaInoceramidaeRadioactive datingCobban William A.1916-2015.1390881Geological Survey (U.S.)GISGISGPOBOOK9910696148903321A USGS zonal table for the Upper Cretaceous middle Cenomanian-Maastrichtian of the Western Interior of the United States based on ammonites, inoceramids, and radiometric ages3528957UNINA