孙作玉,郝维城,江大勇

• 1:北京大学地质系
• 2:北京大学地质系
• 3:北京大学地质系 北京100871
• 4:北京100871

摘要(Abstract)：

对贵州关岭拉丁阶-卡尼阶界线层附近的竹杆坡组和瓦窑组等间距采集牙形石样品,在详细区分牙形石Paragondolella属内各种特征的基础上,结合地层分布情况,认为Paragondolella属在晚拉丁末期沿两个分支方向演化:P.foliatainclinata→P.polygnathiformis→P.maantangensis和P.foliatainclinata→P.foliatafoliata→P.tadpole。从谱系观点出发认为P.polygnathiformis的首次出现点作为卡尼阶底界的标志是合理的,并在竹杆坡剖面首次将拉丁阶-卡尼阶界线置于第2层距底3.38m处,即杨柳井组和竹杆坡组岩石界线以上3.38m处。以上谱系关系的识别也为P.polygnathiformis带细化打下了基础。

关键词(KeyWords)： 牙形石;谱系;三叠系;拉丁阶-卡尼阶界线层;竹杆坡组;关岭;贵州

Abstract:

Keywords:

基金项目(Foundation): 教育部科技重点项目(01006);; “985工程”学科建设(理科)资助项目

作者(Author): 孙作玉,郝维城,江大勇

参考文献(References)：

• 1刘　疆.1991.贵州贞丰县姚家湾、干龙洞卡尼期牙形石研究[硕士论文].北京:北京大学地质系.
• 王成源,康沛泉,王志浩.1998.以牙形刺确定胡氏贵州龙(KueichousaurushuiYang)层的时代.微体古生物学报,15(2):196-98.
• 王志浩,戴进业.1981.四川江油、北川地区三叠纪牙形刺.古生物学报,20(2):138-150.
• 王志浩,钟　端.1990.滇东、黔西和桂北不同相区的三叠纪牙形刺生物地层.地层学杂志,14(1):15-25.
• 王志浩,钟　端.1994.滇东、黔西和桂北不同相区的三叠纪牙形刺.微体古生物学报,11(4):379—412.
• 孙作玉,郝维城,江大勇.2003.贵州关岭动物群时代的牙形石地层证据.北京大学学报,39(1):118-125.
• 杨守仁,刘　疆,张明发.1995.贵州西南部“法郎组”牙形石及其时代.地层学杂志,19(3):161-170.
• 杨守仁,郝维城,王新平.1999.中国三叠纪不同相区的牙形石序列.见:八尾昭,江崎洋一,郝维城,王新平编.中国古特提斯生物及地质变迁.北京:北京大学出版社.97-112.
• 杨守仁,郝维城,江大勇.2002.贵州省六枝县郎岱“法郎组”的牙形石及其时代意义.地质论评,48(6):586-592.
• 陈立德,王成源.2002.贵州关岭地区三叠系竹杆坡组顶部及“瓦窑组”底部的牙形刺.古生物学报,41(3):349-360.
• BaliniM,KrystynL,&TortiV.1998.TheLadinian-Carnian boundaryintervalofSpiti(TethysHimalaya).Albertiana,21:26-32.
• BaliniM,GermaniD,NicoraA,&RizziE.2000.Ladinian/CarnianammonoidsandconodontsfromtheclassicalSchilpario-PizzoCaminoarea(Lombardy):revaluationofthebiostratigraphyandpaleogeography.RivistaItalianadi PaleontologiaeStratigrafia,106(1):19-58.
• BudurovKJ.1976.Structures,evolutionandtaxonomyofthe Triassicplatformconodonts.GeologicaBaleanica,6(1):13-20.
• DiebelVD.1956.ConodonteninderOberkreideVonKamerun.Geologie,5:424-450.
• HirschFT.1994.Triassicconodontsasecologicalandeustatic sensors.CanadianSocietyofPetroleumGeologists,Memoir17:949-959.
• KoikeT.1981.BiostratigraphyofTriassicconodontsinJapan.Sci.Repts.YokohamaNatlUniv.,Sec.,28:25-41.
• KovacsS.1983.Ontheevolutionofexcelsa-stockintheUpper Ladinian-Carnian(conodonta.GenusGondolella,Triassic).SchritenreihederErdwissenschaftlichenKommissionen,5:107-120.
• KovacsS,KrystynL,SzaboI,DosztalyL,&BudaiT.1991.The Ladinian/CarnianboundaryintheBalatonupland,Hungary.SymposiumontheTriassicstratigraphy,Lausanne1991(Abstracts),MuseedeGeologie.39.
• KozurH.1989.Significanceofeventsinconodontevolutionforthe PermianandTriassicstratigraphy.CourierForschungsinstitut Senckenberg,117:385-408.
• KrystynL.1975.DieMikrofaunaderLadinisch-Karnischen HallstatterKalkevonSaklibeli(Taurus-Gebirge,Tubirge)I.Sitzber.Osterr.Akad.Wiss.,math.naturw.KI.,Abt.184:8-10,259-340.
• KrystynL.1983.DasEpidaurus-Profil(Griechenland)-einzurco-nodonten-standardzonierungdestethyalenLadinundUnter-karn.Osterr.Akad.Wiss.,Scbriftenr.Erdwiss.Komm.,5:231-258.
• MastandreaA.1995.CarnianconodontsfromUpperTriassicstrata ofTamarinsection(SanCassianoFM.,Dolomites,Italy).RivistaItalianadiPaleontologiaeStratigrafia,100(4):493-510.
• MastandreaA,NeriC,&RussoF.1997.Conodontbiostratigraphy oftheS.CassianoFormationsurroundingtheSellaMassif(Dolomites,Italy):implicationsforsequencestratigraphicmo-delsoftheSouthernAlps.RivistaItalianadiPaleontologiae Stratigrafia,103(1):39-52.
• MosherLC.1968a.Triassicconodontsfromwesternnorth AmericaandEuropeandtheircorrelation.Journalof Paleontology,42(4):895-946.
• MosherLC.1968b.EvolutionofTriassicplatformconodonts.JournalofPaleontology,42(4):947-954.
• MosherLC.1973.TriassicconodontsfromBrishColumbiaandthe NorthernArcticIslands.GeologicalSurveyofCanada,Bulletin222:141-193.
• NeriC,RussoF,MastandreaA,&BaraccaA.1995.Litostratigrafia,ammonoidieconodontidellaFormazionediSan Cassiano:lasezionedeiPratidiStuores(Stuores-Wiesen,Dolomiti).AnnUniv.Ferrara,5(Suppl.):55-74.
• SweetWC,MosherLC,Clarketal.1971.Conodont biostratigraphyoftheTriassic.In:SweetWC&BergstromS Meds.Symposiumonconodontbiostratigraphy.Geological SocietyofAmerica,Mem.127:441-465.
• WangZhi-hao.1980.OutlineofTriassicconodontsinChina.Rivista ItalianadiPaleontologiaeStratigrafia,85(3-4):1221-1226.
• YangShou-ren.1995.Ladinian-Carnianconodontsandtheir biostratigraphyinAsia.ProceedingoftheIGCPSymposiumon GeologyofSEAsiaandAdjacenAreas.JournalofGeology,SeriesB(5-6):127—138.