icriodus marieae, a new icriodontid conodont species from the middle devonian thomas j. suttner资料.pdf

该【icriodus marieae, a new icriodontid conodont species from the middle devonian thomas j. suttner资料 】是由【玉柱儿】上传分享，beplayapp体育下载一共【8】页，该beplayapp体育下载可以免费在线阅读，需要了解更多关于【icriodus marieae, a new icriodontid conodont species from the middle devonian thomas j. suttner资料 】的内容，可以使用beplayapp体育下载的站内搜索功能，选择自己适合的beplayapp体育下载，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此beplayapp体育下载到您的设备，方便您编辑和打印。PalZ(2017)91:137–-017-0337-9RESEARCHPAPERIcriodusmarieae,anewicriodontidconodontspeciesfromtheMiddleDevonian1,?ErikaKido?:26July2016/Accepted:24January2017/Publishedonline:21February2017óTheAuthor(s),Icriodusmarieae,isKurzfassungMitIcriodusmarieaewirdeineneuedescribedfrompelagiclimestonebedsoftheCarnicAlpsConodonten-ArtauspelagischenKalkenderKarnischen(Austria).SpecimensareobtainedfromtheupperpartofAlpen(O¨sterreich)-ElementetheValentinFormation(CentralCarnicAlps)andrangedieserArtstammenausdemoberenAnteilderValentin-?cantlyFormation(ZentralkarnischeAlpen)undreichenvomdifferingfromothericriodontidconodontsisthatthespa¨-Elementderneudenticlesoneitherlateraldenticlerow,whicharecon-,-oftwotofourdenticles,whichhaveafan-,dieinSeitenansichteinefa¨cherfo¨rmigeSilhouette(consistingofcuspandtwotothreepre-cuspdenticles)(letz-,demShapeanalysiscon?rmsthattheparameterschosenforHauptzahnvorangestellten,Knotenzusammen)sindho¨herlandmarks(elementsizerelationanddenticlesetting)showalsdermitLateral-Leisten-¨?en-korrelierteAnalysezeigt,dassAbstandundPositionderDentikelindenKeywordsConodontaáPrioniodontidaáIcriodontidaeááCarnicAlpsSchlu¨sselwo¨rterConodontaáPrioniodontidaáIcriodontidaeáMittel-DevonáKarnischeAlpenHandlingeditor:&.******@uni-.******@uni-.******@Restudyofacondensedpelagicsectionforahigher-reso-1InstituteofEarthSciences,NAWI-Graz,UniversityofGraz,lutionstratigraphyaroundtheEifelian–GivetianboundaryHeinrichstra?e26,8010Graz,AustriaoftheValentinFormationintheCarnicAlps(Scho¨nlaub2Geological-PaleontologicalDepartment,;Go¨ddertz1982;Hu¨neke2007;,Burgring7,1010Vienna,Austria2015),our3Kollergasse,1030Vienna,¨nlaubandcolleagues(see:¨,1997,2004;Scho¨nlaub1999;?edmapofAustriawiththeWolayer‘‘Glacier’’section(WolayerValley,CarnicAlps)¨ddertz1982).Differentfromearlierstudies,‘‘Glacier’’sectiondissolvedsinglelayersofeachbed(sampledinterval:from(=ValentinFormationtypesection).Thesampledintervalislocatedatbed69tobed73,withtheE/Gboundarytentativelysetthetopoftheformation(arrowhead).cPolishedslabsofthesampledbetweenbeds70/71andtheG/Fboundarysetbetweenintervalwithbed/,,beds72/73byScho¨).,,(iron–manganesecrustswhichindicatetimeintervalsofreducedsedimentation).Duringconodontidenti?cation,wenoticedthatsomeofbiostratigraphy,anagefromEmsian(serotinusBiozone)totheicriodontidspecimensdistinctivelyhavelateralrowFrasnian(LowerhassiBiozone)issuggested(Scho¨;updatedbyHu¨neke2007).However,theelementwiththeanteriorpartformingafan-shapedoutlineEifelian–-high-resolutionsampling,webyScho¨nlaubetal.(1980,,?,12)andidenti?(1990)describedthephe-betweenbeds69and73,withtheE/GboundaryallocatednomenonofreduceddevelopmentoflateralrowdenticlesbetweensamplesVA69topand69top().,i-–Fras-callygainedasymmetricdeformationasaresultofantag-(Scho¨).Furthercharacterisationofthespecimens(andonemoreillustratedbyScho¨.(2015,1980)includingleftandrightelementsofdifferentsize,andreferencestherein).whichallshowthesamefeaturesbutlackdistincttipwearItshouldbenotedthatseveralbedsyieldmixedcon-lusaldeformationintheanteriorpart,wethinkodontfaunaswhichduetoreworkingofslightlyolderthatthereductionoflateralrowdenticlesre?ectsaphy-sedimentshavebeenredepositedintheValentinForma-,,-Geologicalsettingsversityandmicrofaciesshallclarifytherealrange(espe-urrencedatum)ofIcriodusmarieae,‘‘Glacier’’section(,b;N46°,E12°),whichisMaterialsandmethodsthenominatedtypesectionoftheValentinFormation().ItislocatedalongthenorthernsideConodontswereextractedfrom21limestonesamplesinerrainoftheCarnicthesievinglaboratoryoftheInstituteofEarthSciencesAlps(Carinthia,Austria)andcaneasilybereachedeither(UniversityofGraz,Austria)followingstandardchemicalviathepathtoLakeWolayerfromtheLowerValentinalmextractionmethodsforphosphaticmicrofossils(¨).RockmaterialwasdissolvedAllsamplesweretakenfromnearthetopoftheformationinsievesplacedin5-Lbucketsunderaconcentrationof().about5percentHCOOH(technicalgrade:85percent)dilutedin95percentofwell-temperatetapwaterStratigraphyandlithology(38–40°C)(15°–17°dH),().Itconsistsofthinbeddedgreyishbioclasticrepeatedtwotimesadayandlastedabout2–4dayswackestoneandpackstonewithamarkingphosphoritedependingonthesamplesize().Becausetheamountofresiduepelagicdepositionalenvironmentthatreachesabout15persamplewassmallafterwetsieving(:63,125?250and500lm),noheavyliquid123Icriodusmarieae,,°C,pickinganddeterminationofcon-ClassConodontaEichenberg,1930sensuSweetandodontelementswasdoneunderanOlympusSZ40stere-Donoghue,-OrderPrioniodontidaDzik,,scanningFamilyIcriodontidaeMu¨llerandMu¨ller,(SEM)imageswereobtainedusingaGenusIcriodusBransonandMehl,(Zeiss).Fordocumentationofintraspeci?,1938;newlyestablishedspecies,weappliedshapeanalysisoftheGivetiantoFrasnian;fromtheMineolaLimestoneoforalsurfaceofmostofthespecimensusingtipsoflateralMissouri,,medianrow,cuspandpre-cuspdenticles,,maximumwidth,andwidthoftheposteriortermi-(icriodontan)andanuncertainamountofS(acodinan)nationasparameters().-isticallyconsistsofthreelongitudinalrowsofdenticlesRepositorywhichcanbeconnectedthroughtransverseridgesandarefollowedbyoneormoreprominentdenticlesinposteriorAllspecimens(holotypeandparatypes)arestoredattheextensionofthemedianrow(cusp;pre-cusp).ThebasalGeologicalSurveyofAustriainVienna(room1-41-00;cavityisopenedwidelyeitherwitha?aringrimneartherepositorynumbers:GBA-2016/013/0001/001toGBA-lowermargin,).(geniculateornon-geniculate)andpossessasmoothorornamented()(2003,–306).:/Refer(Emsian)toLateDevonian(Famennian)ofEurope,Asia,ences/7D4349C7-B6E9-4E3F-A5A8-,.,=100%.Ccusp,pC1–3holotypeincludinglandmarksandorientation;b,landmarksandpre-cusp1–3,Lc1–3lateralrowcaudaldenticle1–3,Lr1–3lateralrowmeasurementoflength,width,andwidthofposteriorterminationinrostraldenticle1–3,Mc1–3medianrowcentraldenticle1–3,Ma1–4originalsizeofeachelement;c,parison,Ielementsaremedianrowanteriordenticle1–4,ptposteriortermination123Icriodusmarieae,:-Figure3a–,centralandanteriorpartalongthearcuateandsome-timesslightlysigmoidalaxisisnearlyofequallength(C-—PC:Mc:Ma=1::1),withthecentralpart(Mc)Bultynck:,?–31–41–3beingslightlylonger().Thespindleshapeiselongate1980IcriodusbrevisStauffer—Scho¨nlaubetal.:,oval,beingwidesteitheratcentralposition(atLc–Mc–?–)orslightlyanteriormid-length(atLc–Mc–Lr).1990IcriodusbrevisStauffer—Weddige:,,2333Signi?cantforthisspeciesisthedevelopmentof3?,,:lsid::pub:7D4349C7-B6E9-4E3F--(includingtheholotype)(Lc1(–),-(Lc2–3andLr2–3).Infewspecimens,:GBA-2016/013/0003/-rudimentarynodeonly(,f:Lc1,K–L:Lr3,M–N:types:GBA-2016/013/0003/009,GBA-2016/013/0003/Lr1).Lateralrowdenticlesareconnectedwithlesswell-013,GBA-2016/013/0004/014,GBA-2016/013/0004/018,developedmedianrowdenticles/nodes(circulartoovateGBA-2016/013/0004/021,GBA-2016/013/0004/035,shapeinoralview)-2016/013/0004/037,GBA-2016/013/0004/038;notdevelopmentofridges(alsoaxialridgesbetweenmedianillustratedparatypes:GBA-2016/013/0001/001–004,GBA-rowdenticles)isvariableandcouldberelatedtospeci-2016/013/0002/001–003,GBA-2016/013/0003/001–005,men’,themorepro-GBA-2016/013/0007/(,hversusq,r).‘‘Glacier’’section,Wolayertothelateralrowdenticles(:Lc1–Mc1–Lr1).Valley,CarnicAlps(Carinthia,Austria).Bed69(sampleAnteriormedianrowdenticlesaretransversallyadpressednumbers:VA69top,69top),bed70(samplenumber:70aandovateinoralviewandmuchlargerthancentralmedianbase),bed71[samplenumber:71a(1)]andbed72(-number:7