02060oam 2200553 450 991070966220332120180531095920.0(CKB)5470000002471613(OCoLC)896811010(OCoLC)995470000002471613(EXLCZ)99547000000247161320141123d1982 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierJurassic (Oxfordian and Late Callovian) ammonites from the western interior region of the United States /by Ralph W. ImlayWashington :United States Department of the Interior, Geological Survey,1982.1 online resource (iv, 44 pages, 26 unnumbered pages of plates) illustrations, mapGeological Survey professional paper ;1232Title from title screen (viewed October 14, 2014)."Marine waters invaded Montana in late Callovian time, advanced southward across Wyoming in early Oxfordian time, and persisted in Montana during late Oxfordian time."Includes bibliographical references (pages 41-42) and index.Jurassic AmmonoideaPaleontologyJurassicPaleontologyWest (U.S.)AmmonoideafastJurassic Geologic PeriodfastPaleontologyfastUnited States, WestfastAmmonoidea.PaleontologyPaleontologyAmmonoidea.Jurassic Geologic Period.Paleontology.Imlay Ralph W(Ralph Willard),1908-1989,1390990Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910709662203321Jurassic (Oxfordian and Late Callovian) ammonites from the western interior region of the United States3465959UNINA