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Systematically treats fossils from the unit, illustrating and describing one species of fusulinids, nine species of cephalopods (all nautiloids), and one species of trilobites, and argues that the formation likely represents a major portion of the Pennsylvanian period.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/the-casper-formationpennsylvanianof-wyomingand-its-cephalopod-fauna/503841/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/the-casper-formationpennsylvanianof-wyomingand-its-cephalopod-fauna/503841.png","ImageObject",300,407,{"name":92,"@type":93},"mieayamfan","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-17","2026-10-03",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What does the report aim to explain about the Casper formation?","Question",{"text":112,"@type":113},"It discusses the general nature of the Casper formation in southeastern Wyoming and attempts to explain how it relates to other Late Paleozoic formations in the same and nearby regions.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which kinds of fossils are systematically treated in the paper?",{"text":117,"@type":113},"The fossils include one species of fusulinids, nine species of cephalopods (all nautiloids), and one species of trilobites.",{"name":119,"@type":110,"acceptedAnswer":120},"What conclusion is reached about the age or extent of the Casper formation?",{"text":121,"@type":113},"The formation probably represents the major portion of the Pennsylvanian period.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},503841,1791395439,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},962090893677,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Bepn   \nTHE CASPER FORMATION OF WYOMING AND ITSCEPHALOPOD FAUNA  \nA.K.MILLER AND H.D.THOMAS  \nContribution from the Geological Survey of WyomingUniversity of Wyoming,Laramie  \nReprinted from theJoURNAL OF PALEONTOLOGYVol.10,No.8,December,1936  \nPRINTED IN THE U.S.A.  \n# THE CASPER FORMATION(PENNSYLVANIAN)OF WYOMINGAND ITS CEPHALOPOD FAUNA\n\nA.K.MILLER and H.D.THOMAS  \n## ABSTRACT\n\nThe general nature of the Casper formation of southeastern Wyoming is discussed in thispaper,an attempt is made to explain its relationships to other Late Paleozoic formations ofthe same and near-by regions,and much of its fauna is illustrated and described in detail.Thefossils treated systematically represent one species of fusulinids,nine species of cephalopods(all nautiloids),and one species of trilobites.It is concluded that the formation probably rep-resents the major portion of the Pennsylvanian period.  \nLong ago Hayden (1872)and rocks of Wyoming and because of theHague(1877)reported the occur-evidence it affords in regard to therence of Carboniferous fossils in someage of the Casper formation in whichof the sedimentary rocks of theit occurs.The cephalopods,and a fewLaramie Range in southeastern Wy-other significant fossils,are describedoming.Darton(1908)described thebelow and the beds which yieldedstrata which crop out on Casperthem are discussed at some lengthMountain(fig.1)and in the hog-with an attempt to explain theirbacks along the flanks of the Laramierelationships to the other Late Paleo-Mountains,and listed Late Paleozoiczoic strata of southeastern Wyomingfossils from many localities.The onlyand adjacent portions of Colorado.Carboniferous cephalopods he ob-A description of the brachiopods,tained came from Gilmore Canyon,which are abundant in certain por-about 8 miles southeast of Laramie,tions of the Casper,is,however,leftWyoming,and these were identifiedfor the future.by Girty(Darton,1908)merely asThe Geological Survey of Wyo-Tainoceras occidentale,Nautilus sp.,ming helped to finance the field workOrthoceras sp.,and“Ammonoid in-on which this report is based,anddet.\"we wish to express our sincere ap-  \npreciation to Dr.S.H.Knight,StateGeologist,for this assistance.Ac-knowledgment is also due to Prof.C.  \nIn 1933,while trying in vain to de-termine just where Darton obtainedhis specimens,we located in beds ofslightly different lithology what is  \n0.Dunbar,who helped us greatly  \nprobably the same abundant cephalo-with identification of the brachiopods  \npod fauna,and intermittently we listed below;Dr.M.L.Thompson  \nhave been collecting from it ever and Dr.M.K.Elias,who studied  \nsince.This fauna merits considera-  the fusulinids we obtained;Dr.J.  \ntion both because of the rarity of Marvin Weller,who advised us in  \ncephalopods in the Late Paleozoic regard to the significance of our  \nthe Kansas Geological Survey;andseveral students at the University ofWyoming who aided in the collectingof specimens.Essentially all of thefield and stratigraphic work was  \ntrilobites;Dr.N.D.Newell,who compared certain of our cephalopods with specimens in the collections of done by Thomas and the descrip-tions and illustrations of the fossilswere prepared largely by Miller.  \nFiG.1—Index map of southeastern Wyoming and north-central Colorado,showing localities mentioned in the text.  \n# NOMENCLATURE OF CERTAIN LATEPALEOZOIC FORMATIONS IN THE\n\nLARAMIE BASIN  \nThe name Casper formation wasapplied by Darton(1908)to a se-  \n# CASPER FORMATION OF WYOMING\n\nquence of Carboniferous rocks which nature of the intertonguing of thecrop out along the Laramie Moun-beds of different lithologies,it seemstains.In the type region,aroundto us that it is impossible without aCasper Mountain,the lower part ofgreat deal of additional detailedthe sequence is of Mississippian agestratigraphic knowledge to devise aand is now generally eliminated fromsatisfactory nomenclature for thethe Casper.Later,Darton and Sie-beds in the Laramie Basin whichbenthal(1909)published a detailedwere ","cbCaigdhuB0E9pFS","https://ap.wps.com/l/cbCaigdhuB0E9pFS","pdf",6480233,29,"English","# ABSTRACT\n## THE CASPER FORMATION OF WYOMING\n## NOMENCLATURE OF CERTAIN LATE PALEOZOIC FORMATIONS IN THE LARAMIE BASIN","[{\"question\":\"What does the report aim to explain about the Casper formation?\",\"answer\":\"It discusses the general nature of the Casper formation in southeastern Wyoming and attempts to explain how it relates to other Late Paleozoic formations in the same and nearby regions.\"},{\"question\":\"Which kinds of fossils are systematically treated in the paper?\",\"answer\":\"The fossils include one species of fusulinids, nine species of cephalopods (all nautiloids), and one species of trilobites.\"},{\"question\":\"What conclusion is reached about the age or extent of the Casper formation?\",\"answer\":\"The formation probably represents the major portion of the Pennsylvanian period.\"}]","THE CASPER FORMATION(PENNSYLVANIAN)OF WYOMINGAND ITS CEPHALOPOD FAUNA | PDF",1791060896,73]