01940oam 2200565 450 991070629110332120170929082147.0(CKB)5470000002455522(OCoLC)891598840(OCoLC)995470000002455522(EXLCZ)99547000000245552220140929d1951 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierScaphitoid cephalopods of the Colorado group /by W. A. CobbanWashington :United States Department of the Interior, Geological Survey,1951.1 online resource (iii, 42 pages, 21 pages of plates) illustrations, mapsGeological Survey professional paper ;239Title from title screen (viewed September 29, 2014)."Evolution of scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States."Includes bibliographical references (page 39) and index.AmmonoideaWest (U.S.)ScaphitidaeWest (U.S.)PaleontologyCretaceousAmmonoideafastCretaceous Geologic PeriodfastPaleontologyfastScaphitidaefastMiddle WestfastAmmonoideaScaphitidaePaleontologyAmmonoidea.Cretaceous Geologic Period.Paleontology.Scaphitidae.Cobban William A.1916-2015,1390881Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910706291103321Scaphitoid cephalopods of the Colorado group3515750UNINA