华南贵州罗甸纳水剖面宾夕法尼亚亚系各阶之界线

贵州罗甸纳水剖面是研究宾夕法尼亚亚系牙形刺和各阶界线的良好剖面。经详细研究,从石炭系中间界线至石炭-二叠系界线,一个新的牙形刺序列为Gnathodus bilineatus bollandensis（密西西比亚系顶部）,Declinog-nathodus noduliferus,Idiognathoidessulcatus sulcatus,Id.sinuatus,Id.corrugatus-Id.pacificus,Neognatho-dus symmetricus,Idiognathodus pri mulus-Neognathodus symmetricus,Idiognathodus pri mulus-Neognathodus bassleri,Idiognathoides sulcatus parva,Streptognathodus expansus,Idiognathoides ouachitensis,Diplognatho-dus coloradoensis,Di.ellesmerensis,Gondolella donbassica-Go.clarki,Idiognathodus podolskensis,Swadelina subexcelsa,Sw.makhlina-Sw.nodocarinata,Idiognathodus sagittalis,Streptognathodus cancellosus,St.graci-lis,St.guizhouensis,Idiognathodus si mulator,I.nashuiensis,Streptognathodus firmus,St.tenuialveus,St.wabaunsensis和St.isolatus（二叠系）等带。Declinognathodus noduliferus和Streptognathodus isolatus的首次出现分别代表宾夕法尼亚亚系和二叠系之底;Diplognathodus ellesmerensis,Idiognathodus sagittalis和I.si mula-tor的首现则可分别代表莫斯科阶（Moscovian）,卡西莫夫阶（Kasi movian）和格舍尔阶（Gzhelian）之底界。作者较为详细讨论了巴什基尔阶与莫斯科阶以及卡西莫夫阶与格舍尔阶之界线,并认为以Diplognathodus ellesmerensis的首现作为巴什基尔阶（Bashkirian）与莫斯科阶之界线是目前最合适的标志。Diplognathodus ellesmerensis是一易于识别、分布广泛及层位稳定的牙形刺种,其产出又十分接近巴什基尔阶与莫斯科阶的传统界线,因此是划分此界线的良好标志。作者拟推荐纳水剖面为莫斯科阶底界之候选层型剖面,这一界线详细的工作正在大量采样分析和深入研究中,成果将在以后陆续发表。     

贵州罗甸纳水上石炭统(宾夕法尼亚亚系)地层的再研究

本文详细描述了贵州罗甸纳水上石炭统(宾夕法尼亚亚系)剖面的生物地层和年代地层,其牙形刺序列自上而下可详细划分为：Streptognathodus isolatus, S. wabaunsensis, S. tenuialveus, S. firmus, Idiognathodus nashuiensis , Streptognathodus simulator, S. guizhouensis , S. gracilis-S, excelsus , S. cancellosus , S. clavatulus , S. nodocarinatus , Idiognathodus podolskensis , Mesogondolella clarki -Idiognathodus robustus , Diplognathodus ophanus-D, ellesmerensis, Idiognathoides ouachitensis, Streptognathodus expansus, Idiognathoides sulcatus parva, Idiognathodus primulus-Neognathodus bassleri, Idiognathodus primulus-Neognathodus symmetricus, Neognathodus symmetricus, Idiognathoides corrugatus-I, pacificus, I. sinuatus, I. sulcatus sulcatus, Declinognathodus noduli ferus 和 Gnathodus bilineatus bollandensis 等带。 Declinognathodus noduliferus 和 Streptognathodus isolatus 的首次出现分别代表上石炭统(宾夕法尼亚亚系)和二叠系的开始。根据牙形刺和有孔虫的序列,罗甸纳水剖面的上石炭统(宾夕法尼亚亚系)地层自下而上可划分为罗苏阶(Luosuan)、滑石板阶(Huashibanian)、达拉阶(Dalaan)和马平阶(Mapingian),并可与俄罗斯的巴什基尔阶(Bashkirian)、莫斯科阶(Moscovian)、卡西莫夫阶(Kasimovian)和格舍尔阶(Gzhelian),北美的莫罗阶(Morrowan)、阿托克阶(Atokan)、得梅因阶(Desmoinesian)、密苏里阶(Missourian)和弗吉尔阶(Virgilian)进行对比。另外,本文也详细讨论了剖面中的石炭系中间界线及石炭-二叠系界线。     

贵州罗甸上石炭统罗苏阶和滑石板阶牙形刺序列的再研究

本文详细描述了贵州罗甸纳水上石炭统罗苏阶（Luosuan)和滑石板阶（Huashibanian)的牙形刺序列,自上而下可详细划分为：Diplognathodus ophenus-D.ellesmerensis,Idiognathoides ouachitensis,Streptognathodus expan-sus,Idiognathoides sulcatus parua,Idiognathodus primulus-Neognathodus bassleri,Idiognathodus primulus-Neognathodus symmetricus,Neognathodus symmetricus,Idiognathoides corrugatus-I.pacificus,I.sinuatus,I.sulcatus sulcatus和Declinognathodus noduliferus等带,Declinognathodus noduliferus,Idiognathoides ouachitensis和Mesogondolella clarki的首次出现分别代表罗苏阶,滑石板阶和达拉阶的开始,根据牙形刺和有孔虫的序列,罗甸纳水剖面上石炭统的罗苏阶和滑石板阶可与俄罗斯的巴什基尔阶（Bashkirian),莫斯科阶（Moscovian)以及北美的莫罗阶（Morrowan)和阿托克阶（Atokan)对比。     

华南上石炭统莫斯科阶-卡西莫夫阶界线附近的牙形刺

作者详细描述了华南上石炭统莫斯科阶-卡西莫夫阶界线附近的牙形刺序列,由上而下可划分为:Streptog-nathodus gracilis,St.cancellosus,Idiognathodus sagittalis,Swadelina makhlinae-Sw.nodocarinata,Sw.subexcelsa和Idiognathodus podolskensis带,并对这些牙形刺带进行了国际对比。同时认为,以Idiognathodus sagittalis的首次出现为卡西莫夫阶的底界是最好的选择。另外,文中的Idiognathodus sagittalis,Swadelina makhlinae和Sw.subexcelsa都是我国的首次报道。     

贵州罗甸县罗悃剖面石炭系巴什基尔阶-莫斯科阶界线研究北大核心CSCD

贵州罗甸县等地发育宾夕法尼亚亚系巴什基尔阶—莫斯科阶的斜坡相沉积地层,含丰富的■类和牙形刺化石。作为莫斯科阶底界重要生物地层标志的牙形刺Streptognathodus expansus,Idiognathoides postsulcatus以及■类化石Profusulinella (Aljutovella) aljutovica,Pro.prisca和Eofusulina在该剖面上均有发现。通过对罗悃剖面宾夕法尼亚亚系巴什基尔阶-莫斯科阶界线附近■类以及牙形刺分布情况的研究,本文采用Idiognathoides postsulcatus的首现(116.8m)作为罗悃剖面莫斯科阶底界的生物地层标志,■类Profusulinella prisca和Pro.aljutovica最早出现的层位与之相近,可以作为界线的辅助标志。     

我国北方石炭-二叠系牙形刺序列再认识

文中根据当前比较统一的牙形刺分带原则,对我国北方石炭二叠系的牙形刺序列进行了研究和重新定义。我国北方地区石炭二叠系的牙形刺带或组合带由上而下可综合如下：Sweetognathus whitei,S.inornatus,Streptognathodus barskovi,S.isolatus,S.elegantulus-S.oppletus,Idiognathodus magnificus-Neognathodus roundyi,Idiognathodus delicatus-Neognathodus bothrops,Idiognathoides corrugatus-I.sinuatus,Declinognathodus noduliferus,Gnathodus bilineatus bollandensis和Gnathodus bilineatus bilineatus带或组合带。本文同时介绍了牙形刺带和组合带在我国北方的分布、时代及其对比。     

北祁连山地区石炭系—二叠系牙形刺序列(英文)

甘肃省北祁连山地区典型的石炭系—二叠系海陆过渡相沉积中牙形刺较为丰富。对该区三个剖面进行牙形刺的系统研究,鉴定牙形刺9属27种。识别出11个牙形刺带或组合带,从下至上依次为Gnathodus bilineatus bilineatus,G.bilineatus bollandensis,Idiognathoides sulcatus sulcatus,Id.sinuatus,Idiognathodus delicatusI.magnificus,I.podolskensis,Swadelina subexcelsus,Sw.makhlinae,Streptognathodus oppletus-S.elegantulus,S.elongatus和S.barskovi带或组合带。该牙形刺序列可与我国其他地区进行对比,为北祁连山地区提供了高精度的牙形刺生物地层格架。牙形刺的丰度受沉积相控制。     

我国石炭系达拉阶标准剖面的牙形刺

本文详细地研究了石炭系达拉阶标准(或层型)剖面,即贵州盘县达拉寨剖面的牙形刺。在标准剖面达拉阶上部,即相当于先前的有孔虫Fusulinella—Fusulina带的层位,产牙形刺Idiognathodus podolskensis,I．delicatus,I．magnificus,I．obliquus,I．claviformis,Streptognathodus cancellosus和S．parvus等,并自下而上可划分为Idiognathodus podolskensis带和Streptognathodus cancellosus带,前者相当于有孔虫Fusulina pakhrensis-Pseudostaffella paradoxa带下部及Fusulina lanceolata-Fusulinella uozhgalensis带,后者则与Fusulina pakhrensis Pseudostaffella paradoxa带上部和Fusulina cylindrica-F．quasifusulinoides带相当,并可与东欧的莫斯科阶(Moscovian)上部对比。标准剖面达拉阶下部,即相当于有孔虫Profusulinella带的层位未见牙形刺化石,但根据贵州罗甸纳水剖面的资料,有孔虫Profusulinella带之底在牙形刺Diiplognathodus ophanus-D．ellesmerensis带之中通过,因此在罗甸纳水剖面,达拉阶之底比莫斯科阶之底要稍高些。纳水剖面的有孔虫来自台地垮塌的沉积,这类沉积物是不连续的,因此其有孔虫带与牙形刺带的关系并不十分可靠。但总的来看,我国的达拉阶仍大致可与莫斯科阶相对比。     

牙形刺Idiognathodus simulator演化谱系研究进展及意义

尽管牙形刺Idiognathodus simulator已于2007年被国际界线工作组和国际地层委员会石炭纪地层分会正式选定为格舍尔阶的底界标志种,但其演化谱系,即其直接的祖先种并不清楚。近十多年来,各国学者对此展开了紧锣密鼓的研究,提出了多种可能性方案,但均因缺乏足够证据而一一被否。本文作者近两年来通过对华南剖面卡西莫夫阶和格舍尔阶界线层的牙形刺再研究,提出Idiognathodus abdivitus为I.simulator的直接祖先,该演化谱系在贵州罗甸纳庆和纳饶两剖面均得到有效验证。这一研究成果,必将迅速推动石炭系格舍尔阶全球层型(GSSP)的研究进程。     

黔南石炭-二叠系界线牙形刺序列的再研究

本文详细描述了华南贵州罗甸纳水和紫云羊场石炭-二叠系的界线牙形刺序列,并自上而下可划分为：Streptognathodus barskovi,S.constrictus,S.isolatus,S.wabaunsensis.S.tenuialueus和S.firmus带,而Strep-tognathodus isolatus的首现则代表了二叠系的底界,本文讨论了世界各地石炭-二叠系界线牙形刺序列的对比。     

我国石炭系滑石板阶标准剖面的牙形刺

滑石板阶标准剖面的牙形刺主要有Neognathodussymmetricus,Declinognathodusnoduliferusnoduliferus,D .noduliferusinaequalis,D .lateralis,Idiognathoidescorrugatus,I .sinuatus和I .sulcatus等 ,应属Neognathodussymmetricus带 ;滑石板阶之底界则在Neognathodussymmetricus带中通过。由此可知 ,在标准剖面上 。     

EVOLUTION OF SOME LOWER PENNSYLVANIAN CONODONT SPECIES

The closely related conodont species Idiognathoides noduliferus and Idiognathoides sulcatus underwent morphologic diversification in the lower Morrowan (Lower Pennsylvanian). The expanding range of variation of the two progenitor species overlapped, producing a completely intergraded morphologic-continuum. Non-intergradation and taxonomic differentiation at stratigraphically higher levels in the Morrowan demonstrate that certain morphotypes within the continuum bore the potential of becoming descendant species. The descendant species include Idiognathoides sinuatus, Idiognathoides macer, and Gnathodus bassleri symmetricus, Conventional systematic techniques are inadequate to depict the morphologic complexity and evolution shown by this example.     

苏北滨海—宝应地区石炭系牙形刺

本文记述了滨海县新港滨Ⅱ-2孔和宝应县黄浦黄10孔石炭系牙形刺13属16种5亚种和3个未定种。它们自下而上可归属4个牙形刺带和1个亚带。下石炭统的Siphonodella levis-Polyg-nathus inornatus带(含 Siphonodella eurylobata-Polygnaths streeli亚带)和 Gnathodus girtyi带;上石炭统的 Idiognathoides sulcatus带和 Idiognathodus delicatus-I.sinuosus带。     

贺兰山北段呼鲁斯太石炭纪羊虎沟组的牙形刺

首次报道呼鲁斯太晚石炭世羊虎沟组的牙形刺４属９种。根据化石组合面貌,自上而下可建立两个组合,即：Ｓｔｒｅｐｔｏｇｎａｔｈｏｄｕｓ ｐａｒｖｕ－Ｉｄｉｏｇｎａｔｈｏｄｕｓ ｍａｇｎｉｆｉｃｕ组合和Ｎｅｏｇｎａｔｈｏｄｕｓ ｂａｓｓｌｅｒｉ－Ｉｄｉｏｇｎａｔｈｏｄｕｓ ｄｅｌｉｃａｔｕｓ组合,其时代为晚石炭世维斯发期和晚纳缪尔期。为本区石炭纪地层划分对比及盆地格局的研究提供了新的资料。     

华南贵州宾夕法尼亚亚纪牙形类Neognathodus动物群:演化及地层对比意义

以华南斜坡相的罗甸纳庆剖面为代表, 我国石炭纪宾夕法尼亚亚纪早–中期地层建立起了基于多个属种的牙形类分带, 并可与全球其它地区同期地层进行广泛对比。Neognathodus属是这一时期一类常见的浅水相牙形类分子, 在北美、东欧等地的浅水相地层中被广泛用作地层划分对比标志。该属分子在我国北方地区浅水相地层中是重要的带化石分子, 而在华南斜坡相剖面中占比非常低。结合现有的生物地层框架, 本文厘清了华南贵州罗甸附近3条斜坡相剖面中Neognathodus属分子的延限, 尝试利用牙形类P₁分子齿台的对称特征将其演化过程归纳为五个阶段, 并提出阶段4中对称分子(如: N. bothrops, N. colombiensis, N. nataliae等)的再次出现可作为全球莫斯科阶底界的辅助对比标志。     

Late Bashkirian and early Moscovian conodonts from the Naqing section,Luodian, Guizhou,South China

Late Bashkirian and early Moscovian conodonts are abundant and diverse at the Naqing section, South China. All conodont genera known to have numerous species in the late Bashkirian–early Moscovian are recorded here, including Declinognathodus, Diplognathodus, Gondolella, Idiognathodus, Idiognathoides, Mesogondolella, Neognathodus, and Neolochriea. At Naqing, many species of these genera provide a succession of conodont chronomorphoclines throughout the Bashkirian–Moscovian boundary interval. They demonstrate that deposition was remarkably continuous through the boundary interval, a major criterion for selecting a Global Stratotype Section and Point (GSSP). This paper describes the current state of knowledge for several of these chronomorphoclines, and also provides an updated range chart of conodonts recovered from the Naqing section and their correlation with other regions.The taxon that best matches the current concept for the base of the Moscovian Stage in its type region is the phylogenetic first occurrence of Diplognathodus ellesmerensis. An ancestral form with most of the characteristics of D. ellesmerensis occurs at Naqing. More specimens are needed to completely document the chronomorphocline, but because D. ellesmerensis is found worldwide — including that close to the base of the type Moscovian — its evolutionary first occurrence would provide an almost ideal GSSP to define the base of the international Moscovian Stage.     

Pennsylvanian brachiopod,fish and conodont faunas from the Caliza Masiva (San Emiliano Formation) at the Mina Profunda area,Cantabrian Zone,NW Spain

A rock sample obtained from the Caliza Masiva of the San Emiliano Formation (Bashkirian–early Moscovian) in the Mina Profunda area (NE Villamanín) of the Bodón Nappe (Cantabrian Zone, NW Spain) has yielded numerous brachiopods and fish remains not frequently represented in the fossil record. The brachiopod assemblage comprises 13 taxa and is characterized by phosphatic (Langella, Orbiculoidea) as well as exceptionally preserved silicified calcitic elements (a small chonetid, Composita, Crurithyris, Lambdarina, and two minute terebratulids) as the main faunal components. Of special importance is the record of the microbrachiopod Lambdarina winklerprinsi nov. sp., which reduces the large Viséan–Upper Permian gap in the stratigraphic record of this genus. Conodont elements recovered from the same insoluble residue are indicative of the upper Bashkirian Idiognathoides sulcatus parvus Zone. The accompanying fish remains consist of chondrichthyan teeth and scales, an acanthodian scale and osteichthyan tooth-bearing bones, isolated teeth and isolated scales, representing the first Pennsylvanian ichthyoliths analyzed from the Cantabrian Zone. The limestone beds with selective silicification in the San Emiliano Formation provide an exceptional opportunity to improve our knowledge on the patterns of life diversity over geological time.