02545oam 2200673 450 991070689350332120180208081557.0(CKB)5470000002458528(OCoLC)896810313(OCoLC)995470000002458528(EXLCZ)99547000000245852820141123d1975 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierGastropoda, Cephalopoda, and Trilobita of the Amsden Formation (Mississippian and Pennsylvanian) of Wyoming /by Mackenzie Gordon, Jr., and Ellis L. YochelsonWashington :United States Department of the Interior, Geological Survey,1975.1 online resource (iii, F30 pages, 2 unnumbered pages of plates) illustrationsGeological Survey professional paper ;848-FTitle from title screen (viewed October 2, 2014)."The Amsden Formation (Mississippian and Pennsylvanian) of Wyoming.""Descriptions and illustrations of 44 taxa of gastropods, 4 of cephalopods, and 2 of trilobites, with comments on their distribution."Includes bibliographical references (pages F27-F28) and index.Gastropoda, Cephalopoda, and Trilobita of the Amsden Formation Gastropoda, FossilCephalopoda, FossilTrilobitesPaleontologyCarboniferousPaleontologyWyomingCarboniferous Geologic PeriodfastCephalopoda, FossilfastGastropoda, FossilfastPaleontologyfastTrilobitesfastWyomingfastGastropoda, Fossil.Cephalopoda, Fossil.Trilobites.PaleontologyPaleontologyCarboniferous Geologic Period.Cephalopoda, Fossil.Gastropoda, Fossil.Paleontology.Trilobites.Gordon Mackenzie1913-1389569Yochelson Ellis L(Ellis Leon),1928-2006,Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910706893503321Gastropoda, Cephalopoda, and Trilobita of the Amsden Formation (Mississippian and Pennsylvanian) of Wyoming3441342UNINA