Issue 4,2003 Table of Contents

1 GRAPTOLITES OF THE DIDYMOGRAPTUS (CORYMBOGRAPTUS) DEFLEXUS ZONE FROM HUANGNITANG, CHANGSHAN, ZHEJIANG

陈旭 , 许红根 , 俞国华 , 汪隆武

2003(4):481-491. DOI: 1 CSTR:

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Abstract:
浙江常山黄泥塘剖面是中奥陶统达瑞威尔阶的全球界线层型剖面点(GSSP)。文中讨论了黄泥塘剖面宁国组底部Didymograptus(Corymbograptus)deflexus带的笔石动物群，并描述了其中一部分属种。根据该带含牙形刺灰岩夹笔石页岩地层在常山、江山地区纵向和横向的分布，在宁国组下部建立了黄泥塘段。

2 MIDDLE ORDOVICIAN BRACHIOPOD FAUNA OF SOUTHERN UPPER YANGTZE PLATFORM, SW CHINA

ZHAN Ren Bin

2003(4):492-516. DOI: 1 CSTR:

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Abstract:
The Middle Ordovician rocks at Shuanghe, Changning, southeastern Sichuan Province and its vicinity are well developed, especially the Dashaba Formation, the upper part of the Middle Ordovician, which is characterized by the intercalations of yellowish green mudstone and brownish yellow silty mudstone with calcareous nodules and limestone lenses. This formation is different both lithologically and palaeontologically from its equivalent rocks, the Shihtzupu Formation in northern Guizhou Province and the Kuniutan Formation in western Hubei Province. In the Dashaba Formation, the beds yielding benthic shelly fossils (such as brachiopods and trilobites) and those graptolitic beds sandwiched each other several times, which are very helpful to determine the age of the shelly faunas. The graptolites belong to the Didymograptus murchisoni Biozone, latest Arenig to Llanvirn in age.

3 DIVERSITY CHANGES OF EARLY AND MIDDLE PERMIAN FUSULINACEAN FAUNA IN SOUTH CHINA

YANG Xiang Ning , SHI Yu Kun , ZHU Li Ming , YIN Xiao Long

2003(4):517-524. DOI: 1 CSTR:

[Abstract](297) [HTML](0) [PDF 0.00 Byte](5)

Abstract:
根据复合标准剖面的数据，对华南早-中二叠世鲢类动物群属种分异度的变化过程进行了研究，分析了早、中二叠世动物群属种首现及末现速率的差异。研究结果表明，鲢类动物群属级分异度经历了两次快速上升，一次明显下降，在早、中二叠世出现两个相对独立的高峰，但总体上表现出持续上升趋势，并在中二叠世中期达到最大。早二叠世期间属级分异度的短暂下降主要与鲢类动物本身的演化趋势有关，是动物群属级分类单元更替的结果。物种分异度在二叠纪初急剧增长，至早二叠世Sakmarian期已达到整个早-中二叠世的顶峰。早二叠世的动物群更替事件对物种分异度具有显著影响，并导致物种分异度随后总体呈下降趋势，中二叠世开始物种数虽有所上升，但始终未能恢复到早二叠世鼎盛时期的水平。早二叠世是筵类动物稳定发展时期，动物群中属种首现的总数及速率明显大于中二叠世，属种更替也更为频繁。中二叠世中期开始，筵类动物群属种分异度同时呈现急剧下降的趋势，但是，早、中二叠世华南鲢类动物群中属种末现速率却并无明显差异，表明造成晚期古生代稳定生态系统崩溃的环境变化对筵类动物的成种速率有较大的影响，持续的低成种速率是导致中二叠世筵类动物属种分异度下降的内在因素。

4 FOSSIL PLANTS FROM DONGYUEMIAO MEMBER OF THE ZILIUJING FORMATION AND LOWER-MIDDLE JURASSIC BOUNDARY IN SICHUAN BASIN, CHINA

MENG Fan Song , LI Xu Bing , CHEN Hui Ming

2003(4):525-536. DOI: 1 CSTR:

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Abstract:
In recent years, more fossil plants, including 14 genera and 18 species, have been found from the Dongyuemiao Member of the Ziliujing Formation in Sichuan Basin. Of them, a new species and a species discovered for the first time in this basin, i.e. Stachypteris? anomala Meng (sp. nov.) and Klukia exilis (Phillips), are described here. All the important elements of the plant assemblage from the Dongyuemiao Member were extended up from the Zhenzhuchong Member, which shows that this assemblage basically inherited the assemblage aspect of the Zhenzhuchong Member. On the ground that Dictyophyllum nathorsti, D. nilssoni and Otozamites hsiangchiensis have not been recorded in Middle Jurassic and the Ziliujing Formation is subdivided into two sedimentary cycles, it is suggested that the Dongyuemaio Member is of Toarcian age and the Lower Middle Jurassic boundary is placed between the Dongyuemiao Member and the Ma'anshan Member of the Ziliujing Formation.

5 TERTIARY FOSSIL WINGED FRUITS OF PALAEOCARYA FROM NINGMING OF GUANGXI, S.CHINA

LI Hao Min ) , CHEN Yun Fa ) , CHEN Geng Jiao ) , KUANG Guo Dun ) , HUANG Zhi Tao ) ) Nanjing Institute of Geology , Palaeontology , the Chinese Academy of Sciences , Nanjing ) Guangxi Museum of Natural History , Nanning ) Guangxi Institute of Geology , Nanning

2003(4):537-547. DOI: 1 CSTR:

[Abstract](388) [HTML](0) [PDF 0.00 Byte](10)

Abstract:
广西宁明西南约4km处新发现的一个植物群中，含有一些与胡桃科黄杞属现生种的翅果在形态上近似的化石。它们的果翅三裂，裂片具有羽状脉序。这些化石的一部分特征与黄杞属的裸果黄杞组的相似，另一部分特征与该属的黄杞组的相似，因而难以将它们归于其中的任何一组，作者将其归于类黄杞属。后者是胡桃科黄杞族的一个器官属，与目前分布于我国长江以南及东南亚地区的黄杞属以及分布于美洲新大陆的美黄杞属有密切亲缘关系。在地史时期，类黄杞属的代表较广泛地分布于北半球。然而，当前化石却是这类化石在我国南方首次被发现，这为探讨黄杞族的演化提供了重要线索。从当前化石的研究和有关文献中得知，黄杞族祖先的翅果形态与裸果黄杞组的现生种可能有某种程度的近似。

6 SOME JURASSIC HOMOPTERAN INSECTS FROM THE JUNGGAR BASIN,XINJIANG,CHINA

Abstract

2003(4):548-551. DOI: 1 CSTR:

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Abstract:
Three new species are described herein based on tegmina from the Lower Jurassic of the Junggar Basin in Xinjiang, China. They are Procercopis shawanensis sp. nov. (from the Badaowan Formation of Shawan County), Procercopina delicata sp. nov. (from the Badaowan Formation of Karamay City) and Eofulgoridium tenellum sp. nov. (from the Sangonghe Formation of Jimsar County).

7 A RESTUDY OF STAUROGRAPTUS FROM SOUTH ANHUI AND NORTH JIANGXI

LI Ming , FENG Hong Zhen , CHEN Ai Lin

2003(4):552-560. DOI: 1 CSTR:

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Abstract:
对皖南和赣北早奥陶世早特马道克期的Staurograptus重新研究表明，该属具有原始枝末端正分推迟、分支级数缩减和笔石枝密度降低的演化趋势，而代表不同演化阶段的三个种类，即Staurograptus dichotomus Emmons，S．apertus Ruedemann和S．hyperboreus Obut et Sobolevskaya，构成了该属基本的系统发育谱系。种群分析进一步显示，其主要性状变异范围尽管较宽但趋于正态分布的S．dichotomus，可能包含了除S．apertus和S．hyperboreus之外的所有已知Staurograptus的异名种类。

8 NEW MATERIAL OF FOSSIL PLANTS FROM THE EARLY CRETACEOUS MULING FORMATION OF THE JIXI BASIN, EASTERN HEILONGJIANG PROVINCE, CHINA

Abstract

2003(4):561-584. DOI: 1 CSTR:

[Abstract](578) [HTML](0) [PDF 0.00 Byte](4)

Abstract:
The Early Cretaceous flora from the Muling Formation of the Jixi Basin, Heilongjiang Province, Northeast China comprises 38 species, so far as known, belonging to 31 genera of high plants, of which 23 species of 22 genera are described here. The angiospermous leaves Asiatefolium elegans and Dicotylophyllum sp. are found in the Muling Formation for the first time. Cuticles of Tyrmia sp., Nilssoniopteris sp., Ginkgoites cf. sibirica, Sphenobaiera sp., Elatocladus manchurica are studied with scanning electron microscope (SEM). The flora is mainly composed of leptosporangiate ferns and gymnosperms. Most of them occurred in the Lower Cretaceous. The geological age of the Muling Formation and its flora may be Barremian and probably middle Barremian-early Aptian. No representatives of gymnosperms with needle-like leaves have been found in this flora. The occurrence of abundant tropical- or subtropical-type ferns implies a warm and humid climate dominating over the area. On the other hand, some deciduous gymnosperms including Ginkgoales, and the presence of growth rings in the fossil secondary wood, indicate seasonal changes. Paleophytogeographically, the flora belongs to the Early Cretaceous Siberian or Canada-Siberian province.

9 PRELIMINARY RESEARCH ON TUBULAR PORE SYSTEM OF EARLY CAMBRIAN MEISHUCUNIAN HYOLITH CONCH

FENG Wei Min

2003(4):585-589. DOI: 1 CSTR:

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Abstract:
Research on microstructures of some slices and a well preserved hyolith conch from the Early Cambrian Meishucunian of the Yulu, Huize County and Baizai, Xundian County of eastern Yunnan shows that hyolith tubular pore system is well developed. Outer layer of the conch consists of longitudinal long fibre bundles that can branch and anamonse while inner layer of the conch transversal elongated bundles. A lot of triangular or elliptical pores are distributed in the outer layer. These pores are parallel to growth direction of the conch. Transversal long channels are distributed in and between bundles of the inner layer. Tubular pores of the outer and inner layers can be connected. In some slices of hyoliths the tubular pores that were filled with phosphate granules in the process of the early phosphatization can be recognized. These tubular pores are densely distributed. They are approximately perpendicular to shell surface and almost reach to surface and bottom of the conch. The porosity of hyolith conch reflects not only special physiological and ecological function of the hyoliths to environment but also one of its primitive features and its special position in the early biomineranization.

10 REVIEW OF THE CLASSIFICATION OF THE FAMILY AFROGRAPTIDAE(CRUSTACEA: CONCHOSTRACA)

Abstract

2003(4):590-597. DOI: 1 CSTR:

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Abstract:
Serration structure on the growth lines of the fossil conchostracans was considered as a key character for the family Afragraptidae. SEM micrographs of some living forms indicate that there is a row of setae on the growth lines. Setal articulations of the growth lines are broken off while their insertions remain, which form an apparently serration margin along the growth lines for the fossil specimens in the external mold. The setae of the growth lines belong to annulate type without setules and probably played in sensory function. This structure was found from about 32 species in seven genera of three families for the living conchostracans and 22 fossil genera. Multi-radiating costae and stout tubercles on the valves are much more important than that of serration structure in high taxonomic status for the family Afrograptidae. An emended scheme of the Afrograptidae is presented herein. This family can be better placed in the suborder Estherielliina, rather than in the Estheritina.

11 REVIEW OF THE GENUS SUBLEPIDODENDRON (NATHORST) HIRMER, 1927

王祺 , 郝守刚

2003(4):598-612. DOI: 1 CSTR:

[Abstract](387) [HTML](0) [PDF 0.00 Byte](4)

Abstract:
亚鳞木属广泛分布于世界早石炭世地层中，其模式种奇异亚鳞木不但被视为欧美植物区泥盆纪末与石炭纪初之交的标志种，而且在中国还广泛出现于晚泥盆世，因此也被作为中国晚泥盆世晚期(法门期)植物化石组合带的首要成员。然而，由于以往亚鳞木属单凭叶座等外部形态性状来定义，所以人们对它的认识仍然局限于茎器官属，这妨碍了对亚鳞木属的真正分类位置和演化谱系的认识。文章通过对亚鳞木植物研究历史的回顾，分析了与其相关的古植物学家的分类观点，并从中发现了一些有待解决的问题。结合亚鳞木属的两个种无锝亚鳞木和松滋亚鳞木的解剖学和生殖器官的研究，作者得出以下主要认识：1)历史上的亚鳞木属缺乏明确的定义和必要的生物学属性研究；2)亚鳞木属的定义需要重新厘定；3)无锡亚鳞木和松滋亚鳞木的解剖、生殖结构以及松滋亚鳞木和模式种奇异亚鳞木的分枝构造表明，亚鳞木属与石炭纪比较进化的鳞木目(或广义水韭目)中的木本石橙檀物关系更近，而与传统所认为的泥盆纪原始鳞木目中草本石松植物的关系较远。因此，文章将亚鳞木科和亚鳞木属从原始鳞木目中分离出来，归入广义的水韭目。亚鳞木属种的广泛出现进一步证实，石炭纪比较进化的木本石松植物在晚泥盆世(距今约3．7亿年)已经演化成功，木本石松植物中假单轴分枝的组构类型在同一时期业已形成。亚鳞木属可能代表了系统发育上比较高级的木本石松植物的一个演化支系或鳞木科的祖先类群之一。

12 DISCUSSION ON THE STUDY OF THE GENERA CLARAIA AND CLARAIOIDES (BIVALVIA) OF LATE PERMIAN AGE

FANG Zong Jie

2003(4):613-619. DOI: 1 CSTR:

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Abstract:
对当前二叠-三叠纪克氏蛤类研究中存在的几个问题进行讨论，并对杨逢清等(2002)提出的关于属一级划分的原则提出质疑。通过对Claraia tumida(Patte)的再研究，确认早三叠世的克氏蛤不存在足丝凹口内端呈明显扩大的类型。经过详细的讨论和比较，无论是从形态上，或是生态上，还是从生物地理学的角度，克氏蛤和类克氏蛤在晚二叠世都应被视为两个平行发展的属。类克氏蛤在二叠纪末全部灭绝，未留下任何后裔，它与克氏蛤之间并不存在演化关系。克氏蛤的地质历程是晚二叠世早期至早三叠世晚期，发现于俄罗斯北极区新地岛晚二叠世早期的Claraia novosemelica Lobanova是克氏蛤的最早代表，它应当位于克氏蛤演化的基干部位。

13 MICROFOSSILS AND CHRONOSTRATIGRAPHY OF THE DEEP BEDS IN THE WELL BAOSHI 1# FROM XIHU SAG, THE EAST CHINA SEA

GU Hui Rong

2003(4):620-623. DOI: 1 CSTR:

[Abstract](307) [HTML](0) [PDF 0.00 Byte](11)

Abstract:
This paper mainly reports the microfossils including coccoliths, foraminifers, dinoflagellates, ostracods and palynomorphs from the deep beds (interval 3 447? ? 806 m ) exposed in the well Baoshi 1# of Xihu Sag and discusses its chronostratigraphy. According to the geological distribution of these microfossils and a comparison with those fossils from formerly drilled wells in Xihu Sag, the authors hold that the intervel covering these deep beds of the well Baoshi 1# is a set of newly found strata and belongs to Paleocene.

14 RESTUDY ON THE TAXONOMIC POSITION OF PROTAITZEHOIA YANG (TRILOBITA)--REPLY TO DISCUSSION ON THE TAXONOMIC POSITION AND THE SPECIFIC SYNONYMS OF PROTAITZEHOIA YANG

YUAN Jin Liang ) , YIN Gong Zheng ) ) Nanjiang Institute of Geology , Palaeontology , the Chinese Academy of Sciences , Nanjing ) Geological Survey , Guizhou Bureau of Geology , Mineral Exploration , development , Guiyang

2003(4):624-626. DOI: 1 CSTR:

[Abstract](350) [HTML](0) [PDF 0.00 Byte](6)

Abstract:
Based on study on the matching trilobite cephalon (cranidium) and pygidium, it has been demonstrated that the Protaitzehoia sp. (Peng et al ., 2003,textfig.2(I L) was established for pygidium (K) of Stephanocare Monke, 1903 (Lu et al ., 1965,pl.73,figs.5 9; Zhang and Jell,1987,pl.104,figs.5 7) belonging to Damesellidae Kobayashi,1935 and mismatched cranidia of Protaitzehoia Yang, which are unrelated to Damesellidae Kobayashi, 1935. In general configuration of cranidium, free cheek, pygidium and hypostoma, Protaitzehoia Yang is closely related to Cheilocephalus Berkey,1898 (Rasetti,1965,pl.17,figs.1 14). Protaitzehoia Yang is, however, discriminated from Cheilocephalus Berkey,1898 only by its deeper glabellar furrows, more or less pygidial indentation at rear and granular sculpture on the surface of exoskeleton, therefore Protaitzehoia Yang is here attributed to the Cheilocephalidae Shaw,1956.

15 A Historical Review on Research of the Paleontological Clocks

蒋振华

2003(4):626-626. DOI: 1 CSTR:

[Abstract](374) [HTML](0) [PDF 0.00 Byte](5)

Abstract:
1 .一篇科学论文和全方位的新闻炒作近期 ,天津地矿所朱士兴和黄学光教授在《微体古生物学报》第 2 0卷第 1期发表了题为《1 3亿年前叠层石的生长节律和地日月动力学》论文。作者吸收了前人研究思路 ,补充了数个C ,O2 同位素测定数据 ,对天津蓟县中元古代雾迷山组 (距今 1 2— 1 3亿年的沉积 )的Pseudogymnosolen叠层石的纹层韵律进行了研究和解释。结论是在近 1 3亿年以前地球上每个月超过 4 2天 ,每天仅相当于现今 1 6个小时。尽管文章结论仍需资料佐证 ,但该文无疑具一定的科学价值。论文发表后 ,由于过多的新闻炒作 (包括报刊 ,电…

16 THE TRACE OF A PALEONTOLOGIST-PROFESSOR SHIPU YANG (1925-2002)''''S CONTRIBUTIONS TO GEOLOGY AND PALEONTOLOGY

杨洪

2003(4):627-636. DOI: 1 CSTR:

[Abstract](328) [HTML](0) [PDF 0.00 Byte](8)

Abstract:
回顾和总结了杨式溥教授一生为中国地质学和古生物学所做出的重要贡献。以其公开发表的论著为基础，论述了杨式溥在中国石炭纪地层学、腕足动物化石、古遗迹学以及古生态学等研究领域的贡献，并简要评述了他的学术思路和治学特色。杨式溥对中国西北和西南地区石炭纪的腕足动物化石的研究为中国石炭纪地层的内部界线划分、对比、化石组合、地理区系及沉积类型提供了重要证据。杨式溥是中国古生态学和古遗迹学的奠基人，他全面系统地引入了古生态学的概念与方法，并在全国高校首次开设了有关课程。他对中国各时代、不同沉积相中的遗迹化石的系统描述和遗迹相的研究开拓了中国古生物学的新领域。杨式溥执教半个多世纪，为中国地质和古生物事业培养了大批专门人才。文后附有以出版年代为序的杨式溥所著文献的完整目录。

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