02042oam 2200553 450 991070673930332120180119103854.0(CKB)5470000002458066(OCoLC)896810130(OCoLC)995470000002458066(EXLCZ)99547000000245806620141123d1972 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierDistribution of the Middle Ordovician Copenhagen formation and its trilobites in Nevada /by Reuben James Ross, Jr., and Frederick C. ShawWashington :United States Department of the Interior, Geological Survey,1972.1 online resource (iii, 33 pages, 8 unnumbered pages of plates) illustrations, mapGeological Survey professional paper ;749Title from title screen (viewed September 30, 2014)."Descriptions of Middle Ordovician trilobites belonging to 21 genera contribute to correlations between similar strata in Nevada, California, and Oklahoma."Includes bibliographical references (pages 29-30) and index.PaleontologyOrdovicianPaleontologyNevadaTrilobitesNevadaOrdovician Geologic PeriodfastPaleontologyfastTrilobitesfastNevadafastPaleontologyPaleontologyTrilobitesOrdovician Geologic Period.Paleontology.Trilobites.Ross Reuben James1918-1387471Shaw Frederick C.1937-Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910706739303321Distribution of the Middle Ordovician Copenhagen formation and its trilobites in Nevada3437347UNINA