02161oam 2200553 450 991070565020332120170519135418.0(CKB)5470000002451895(OCoLC)891574878(OCoLC)995470000002451895(EXLCZ)99547000000245189520140929d1969 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierThe late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis (DeKay) in the western interior of the United States /by William A. CobbanWashington :U.S. Department of the Interior, Geological Survey,1969.1 online resource (iii, 29 pages, 5 pages of plates) illustrations, mapGeological Survey professional paper ;619Title from title screen (viewed September 24, 2014)."Three chronological forms each of Scaphites leei and Scaphites hippocrepis occur in dimorphic pairs and provide a means of correlating thin units of strata."Includes bibliographical references (pages 24-27) and index.Late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis AmmonoideaWest (U.S.)PaleontologyCretaceousPaleontologyWest (U.S.)AmmonoideafastCretaceous Geologic PeriodfastPaleontologyfastUnited States, WestfastAmmonoideaPaleontologyPaleontologyAmmonoidea.Cretaceous Geologic Period.Paleontology.Cobban William A.1916-2015,1390881Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910705650203321The late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis (DeKay) in the western interior of the United States3460333UNINA