简介：Themultivariatestatisticalanalysisisprofitablyapplicabletothestudyofconodontmultielementtaxonomy.R-modeclusteranalysesofquantitativeand0-1dataarecarriedoutheretoclassifymorethan6000discreteLowerTriassicconodontspecimensbelongingto108kindsofconodontelementsfromWesternGuangxi.TheresultsofR—modeclusteranalysisrevealmoredirectlytherelationshipamongmanyisolatedconodontelements,andtheyalsoprovethatthere-sultsofthelogicalinferencearebasicallycorrect,i.e.108kindsofconodontelementscanbeidenti-fiedinto32speciesbelongingto11generaofconodonts.TheapplicationofR-modeclusteranalysismultielementtaxonomybythemethod,hasbroughtabout4significantconclusions,whichcanbeusedbyconodontresearchersasreference.

简介：Anovelautomaticseamlessstitchingmethodispresented.Comparedtothetraditionalmethod,itcanspeedtheprocessingandminimizetheutilizationofhumanresourcestoproducegloballunarmap.Meanwhile,anewglobalimagemapoftheMoonwithspatialresolutionof～120mhasbeencompletedbytheproposedmethodfromChang’E-1CCDimagedata.

简介：在这研究，在Tang-eKushk和Sarvestan区域stratigraphic节的东方的Tarbur形成的465m被学习，185薄节被提供并且分析。基于岩石层位学的研究，在这二stratigraphic节的Tarbur形成被划分成上面、更低的部分。更低的部分包括是的中等床的rudist石灰石与Gastropoda由铁小瘤组成。上面的部分用轻灰巨大的organodetrital石灰石做的。两个都学习的节的识别有孔虫目动物由组成：Orbitoides媒介，Orbitoidestriangularis，Orbitoidestissoti，Orbitoidesorientalis，Orbitoidesapiculata，Antalynakorayi，Rotaliaskourensis，Dicyclinaschlumbergeri，Nezzazatinellasp，Omphalocyclusmacroporus，Trochospirasp，铁陨石calcitrapoides，Broeckinellasp，Lepidorbitoidessocialis，Gavelinellapertusa，被检测，并且也，它有Salpingoporelladinarica的Dasycladacea，Salpingoporellaturgida，Salpingoporellasp...根据诊断有孔虫类，Tarb的年龄决心

简介：In1997,IGCPProjectNo.410wasestablishedtoappraiseknownrecordsofOrdovicianbiotas,inordertoevaluateoneofthegreatest-everdiversificationsoflifeonEarth,between489and443millionyearsago.Datacollectionandanalysisofbiodiversitywerecoordinatedthroughsevenregionalteams,andaglobal“clade”team.