Early Middle Devonian conodont faunas (Eifelian, costatus-kockelianus zones) from the Roberts Mountains and adjacent areas in central Nevada

Bulletin of geosciences

Vodrážková S¹  Klapper G¹  Murphy MA¹ 

关键词: Middle Devonian;    conodont biostratigraphy;    Nevada;    Roberts Mountains;   

DOI  :  

来源: Czech Geological Survey

【 摘 要 】

ConodontfaunasfromtheuppermostpartoftheCoilsCreekMemberoftheMcColleyCanyonFormationandprimarilythelowerpartoftheDenayLimestone(MiddleDevonian,Eifelian)fromthenorthernRobertsMountainsandadjacentcentralNevadaareasarethesubjectsofthepresentstudy.FournewspeciesfromtheDenayLimestone(Eifelian,costatusandaustraliszones)aredescribedherein:Polygnathussalixensissp.nov.,P.holynensissp.nov.,P.robertsensissp.nov.andP.dameleisp.nov.Thesespeciesaddtothebiostratigraphicresolutionandcharacterizationofthecostatusandaustraliszones.ThebasalDenayLimestoneinthenorthernRobertsMountainsisintheupperpartofthecostatusZone,whichdirectlyoverliestheupperCoilsCreekMemberintheserotinusZone.Thus,thepatulusandpartituszonesaremissinginthisarea.TothesouthinthenorthernAntelopeRangeandthenorthernHotCreekRange,thepartitusZonesitsdirectlyontheserotinusZonewiththepatulusZonemissing.

【 授权许可】

Unknown