华北燕辽地区侏罗纪鼠李科植物

报道了发现于华北燕辽地区东段(北纬40°58’,东经120°21’)中侏罗世地层海房沟组化石植物群中的马甲子属[Paliurus]与枣属(Zizyphus)的果实化石。二者的进化水平可与其第三纪及现代属种相比较。它们的出现说明鼠李科存在于中国侏罗纪,早期演化在中国,并可能起源于中国。起源时间当在中生代之前。     

陕南早中侏罗世勉县群植物组合面貌

勉县群为陕南勉县至紫阳一带早中侏罗世陆相含煤沉积；自下而上分为三个组，即洪水沟组、沔水组、堰河组．该群含有丰富的植物化石，该植物群是典型的南方型Ｐｔｉｌｏｐｈｙｌｌｕｍ—Ｃｏｎｉｏｐｔｅｒｉｓ植物群。根据沉积特征及植物化石分布规律分析，勉县群三个组的形成时代依次为：早侏罗世、早中侏罗世、中侏罗世。有趣的是，在沔水组中下部发现了有花植物中华木兰（Ｍａｇｎｏｌｉａｍｉｏｃｅｎｉｌａ），为研究被子植物早期起源历史提供了一份新的材料。     

内蒙古东部霍林河煤田晚侏罗世—早白垩世植物及含煤地层初步研究

本文报道了我国内蒙古东部霍林河煤田植物化石及其生物地层的初步研究,概要的介绍了目前确定的34属62种大植物化石及部分孢粉。淡水瓣鳃类等化石.根据植物群的组成特征及同相关植物化石群的对比,认为霍林河植物群及其产出地层的时代为晚侏罗世—早白垩世.通过植物群组合性质研究,提出晚侏罗世—早白垩世时期霍林河地层可能曾地处北半球或暖温带.     

甘肃华亭侏罗系Phoenicopsis(Phoenicopsis) angustifolia Heer的表皮构造与碳同位素特征

描述了甘肃华亭中侏罗世植物化石狭叶拟刺葵Phoenicopsis(Phoenicopsis)angustifolia Heer的角质层微细构造。利用化石的现存最近对应种Ginkgo biloba L。与化石Ph.(Ph.)angustifolia Heer的气孔比率,恢复的华亭中侏罗世的大气CO_2体积分数为1.274×10~(-3),这一结果与邻区兰州窑街银杏属化石植物恢复的中侏罗世CO_2体积分数相一致,表明拟刺葵属植物是恢复大气CO_2体积分数的良好材料。此外,利用Ph.(Ph.)angustifolia角质层碳同位素值估算了其水分利用率为223.0 mmol/mol,明显高于现代银杏的数值,表明当时气候比较湿润。     

肥城煤田石炭纪类动物群及其地层划分

肥城煤田石灰纪含煤岩系的石灰岩中含较丰富的类化石，经研究计有１４属４２种，主要产于本溪组的五灰及太原组的一、二、四灰，根据类演化发育阶段和在地层上的垂直分布规律，自下而上建立了三个化石组合带，即：１．Ｆｕｓｕｌｉｎｅｌｌａ－Ｆｕｓｕｌｉｎａ组合带；２．Ｐｓｅｕｄｏｓｃｈｗａｇｅｒｉｎａ组合带；３．Ｔｒｉｔｉｃｉｔｅｓｐａｒａｍｏｎｔｉｐａｒｕｓ组合带。以上三个组合带经与华北、华南相关类动物群的对比，含三个化石组合带的地层分别代表了中石炭世中晚期和晚石炭世的沉积。此外，通过类及其他动植物群特征和空间分布的研究，对本区长期以来悬而未决的中、上石炭统和石炭、二迭纪界线进行了探讨。     

东胜煤田侏罗系延安组植物群及古气候分析

应用放大镜观察的方法对东胜煤田侏罗系延安组中保存的大量植物化石进行分析,共鉴定出24属64种.在此基础上,对侏罗系延安组植物群组合特征及其所反映的古气候进行研究.结果表明:该植物群可分为有继承性的Coniopteris szeiana-Nilssonia pterophylloides-Eboracia lobifolia与Neocalalamites hoerensis-Podozamites lanceolatus上下两个组合;该植物群与北京门头沟植物群、豫西义马植物群主要属种相同,都是银杏纲、真蕨纲占优势,并以蚌壳蕨科的繁盛为特征,均属于我国北方地区早、中侏罗世Coniopteris-Phoenicopsis植物群,可进行对比;植物群组合特征反映东胜煤田延安组时期为季节分明、偏潮湿的温带-暖温带气候.     

陕西店头矿区延安组植物组合及其时代归属

本文详细论述了陕西黄陵县店头矿区延安组植物群面貌及组合特征;根据古植物化石在纵向上的分布,将延安组植物群划分五个植物组合;在考虑该组植物群特征的同时,结合延安组沉积古地理特征,岩性特征将延安组第1段地层划入早侏罗世,其余4段地层划归中侏罗世。     

西藏聂拉木县聂聂雄拉地区早、中侏罗世双壳类动物群

西藏聂拉木县聂聂雄拉地区，早、中侏罗世地层较发育，地层中化石属 种繁多。地层划分为下侏罗统“普普嘎组”，中侏罗统聂聂雄拉组和拉弄拉组。作者研究了该区旱、中侏罗世的双壳类动物群40多属80多种。描述双壳类化石8新种：Tancredia(T.)nyalamensis,Hiatellasubtrigona,Pronoella(P.)minima,Opis(O.)curvus,Costigeruillia tetracostata,Weyla costalliformisa,Entolium obliquus,E.subfilosus,刊出部分化石图版，简述双壳类化石组合特征。它的研究对该地区旱、中侏罗世地层划分对比，生物地理分区和动物群特征的认识都具有一定的理论与实践意义。     

新汶煤田太原组类动物群

新汶煤田上石炭统太原组中共含有５层海相灰岩，各层灰岩中均含有较丰富的类化石。经作者研究，根据它们的属种组成和在纵向上的分布规律建立了两个带三个亚带：Ⅱ．Ｔｒｉｔｉｃｉｔｅｓｂｏｓｈａｎｅｎｓｉｓ带；Ⅰ．Ｐｓｅｕｄｏｓｃｈｗａｇｅｒｉｎａ带，此带又划分出三个亚带：３．Ｓｃｈｗａｇｅｒｉｎａｖａｌｉｄａ－Ｂｏｕｌｔｏｎｉａｓｉｍｐｌｉｃａｔａ亚带，２．Ｔｒｉｔｉｃｉｔｅｓｓｈａｎｄｏｎｇｅｎｓｉｓ－Ｍｏｎｔｉｐａｒｕｓｔｈｏｍｐｓｏｎｉａｎａｓ亚带，１．Ｓｃｈｗａｇｅｒｉｎａｅｌｋｏｅｎｓｉｓ亚带。对各带及亚带的类动物群特征进行了阐述，同时，对较低级的类动物群在层位上高于Ｐｓｅｕｄｏｓｃｈｗａｇｅｒｉｎａ带的现象进行了探讨。并将本区所建立的化石带与华北部分地区相应的组合带进行了对比。     

辽西北票一些中侏罗世植物

本文报道了辽宁西部北皋长皋蛇不歹附近的植物化石5属14种,其中对5个新种(北票锥叶蕨、常氏锥叶蕨、假微尖堆叶蕨、简单异羽叶、稀脉篦羽叶)进行了描述,据产出的植物化石特征及同相关地层中的植物化石对比,认为该区植物化石所产出地层时代为中侏罗世。     

A Jurassic mammal from South America

The Jurassic period is an important stage in early mammalian evolution, as it saw the first diversification of this group, leading to the stem lineages of monotremes and modern therian mammals. However, the fossil record of Jurassic mammals is extremely poor, particularly in the southern continents. Jurassic mammals from Gondwanaland are so far only known from Tanzania and Madagascar, and from trackway evidence from Argentina. Here we report a Jurassic mammal represented by a dentary, which is the first, to our knowledge, from South America. The tiny fossil from the Middle to Late Jurassic of Patagonia is a representative of the recently termed Australosphenida, a group of mammals from Gondwanaland that evolved tribosphenic molars convergently to the Northern Hemisphere Tribosphenida, and probably gave rise to the monotremes. Together with other mammalian evidence from the Southern Hemisphere, the discovery of this new mammal indicates that the Australosphenida had diversified and were widespread in Gondwanaland well before the end of the Jurassic, and that mammalian faunas from the Southern Hemisphere already showed a marked distinction from their northern counterparts by the Middle to Late Jurassic.     

华北东部侏罗—白垩纪盆地演化及其对构造运动的响应

华北东部侏罗—白垩纪盆地演化的阶段性反映了燕山运动的幕式过程.在华北东部侏罗—白垩纪残留盆地分布、沉积充填特征研究的基础上,结合区域构造演化背景,恢复了晚中生代华北东部的原型盆地格局.结果表明:早—中侏罗世华北东部处于由古亚洲构造域向滨太平洋构造域演化的过渡阶段,早期发育一些小的山间沉积盆地群,表现为对印支期造成的低洼地区的充填,晚期表现为披覆式沉积;晚侏罗世进入中生代重要的构造转折期,华北东部构造演化受控于西太平洋区板块活动,晚侏罗—早白垩世伸展断陷盆地发育,盆地的展布具有明显的分区性,沉积充填受北东—北北东向和北西—北西西向断裂系统控制;晚白垩世,郯庐断裂带以西的华北东部地区持续隆升,仅局部洼陷有红色碎屑沉积充填.     

Earliest known crown-group salamanders

Salamanders are a model system for studying the rates and patterns of the evolution of new anatomical structures. Recent discoveries of abundant Late Jurassic and Early Cretaceous salamanders are helping to address these issues. Here we report the discovery of well-preserved Middle Jurassic salamanders from China, which constitutes the earliest known record of crown-group urodeles (living salamanders and their closest relatives). The new specimens are from the volcanic deposits of the Jiulongshan Formation (Bathonian), Inner Mongolia, China, and represent basal members of the Cryptobranchidae, a family that includes the endangered Asian giant salamander (Andrias) and the North American hellbender (Cryptobranchus). These fossils document a Mesozoic record of the Cryptobranchidae, predating the previous record of the group by some 100 million years. This discovery provides evidence to support the hypothesis that the divergence of the Cryptobranchidae from the Hynobiidae had taken place in Asia before the Middle Jurassic period.     

Biodiversity and palaeoclimate of the Middle Jurassic floras from the Tiaojishan Formation in western Liaoning, China

The Middle Jurassic Tiaojishan Formation in Beipiao City, western Liaoning comprises a variety of plant fossils including leaf impressions, compressions, permineralized rhizomes, fossil wood and dispersed spores and pollen grains. Impression and compression data suggest that the flora in the Tiaojishan Formation is dominated by Bennettitales, ferns and Nilssoniales, followed by ginkgophytes; conifers and sphenopsids are less common. Abundant permineralized rhizomes are referable to diverse taxa within fern families such as Osmundaceae and Cyatheaceae. Abundant and upright fossil stumps are common in the Tiaojishan Formation. They are well preserved with distinct growth rings and are predominatly conifers. The floristic signature of the Tiaojishan Formation indicates that subtropical to temperate warm and humid climates prevailed during the late Middle Jurassic in the Beipiao area. Growth ring pattern analysis of the fossil conifer wood demonstrates a consistent and distinct seasonal climate during this interval. The biodiversity of the remarkable Tiaojishan flora provides essential evidence for understanding the vegetation, palaeoclimate and environmental evolution of western Liaoning during the Middle to Late Jurassic.     

Biodiversity and palaeoclimate of the Middle Jurassic floras from the Tiaojishan Formation in western Liaoning, China

The Middle Jurassic Tiaojishan Formation in Beipiao City, western Liaoning comprises a variety of plant fossils including leaf impressions, compressions, permineralized rhizomes, fossil wood and dispersed spores and pollen grains. Impression and compression data suggest that the flora in the Tiaojishan Formation is dominated by Bennettitales, ferns and Nilssoniales, followed by ginkgophytes; conifers and sphenopsids are less common. Abundant permineralized rhizomes are referable to diverse taxa within fern families such as Osmundaceae and Cyatheaceae. Abundant and upright fossil stumps are common in the Tiaojishan Formation. They are well preserved with distinct growth rings and are predominatly conifers. The floristic signature of the Tiaojishan Formation indicates that subtropical to temperate warm and humid climates prevailed during the late Middle Jurassic in the Beipiao area. Growth ring pattern analysis of the fossil conifer wood demonstrates a consistent and distinct seasonal climate during this interval. The biodiversity of the remarkable Tiaojishan flora provides essential evidence for understanding the vegetation, palaeoclimate and environmental evolution of western Liaoning during the Middle to Late Jurassic.     

Occurrence of Sciadopitys-like fossil wood （Coniferales） in the Jurassic of western Liaoning and its evolutionary implications

The genus Sciadopitys, containing a single species (S. verticillata), is the only extant representative of the Family Sciadopityaceae (Coniferales), and is a remarkable living fossil. Although some leafy fossils have been ascribed to Sciadopityaceae, fossil xylem material with a close affinity to this family is very rare, and there have been no fossils found showing both pith and primary xylem structures, which are of great importance for wood identification. Thus, it has been difficult to use fossils for the understanding of wood anatomy evolution in the sciadopityaceous plants over geological time. In this note we briefly report on Sciadopitys-like fossil wood found in the Middle Jurassic of western Liaoning, which bears well-preserved Protosciadopityoxylon-type secondary xylem, endarch primary xylem and heterogeneous pith. This is the first report of fossil specimens of the Sciadopityaceae with such detailed preservation of wood structures. The discovery provides precise anatomical evidence for reconstructing the evolu- tionary history and geographical distribution of Sciadopityaceae, as well as contributing to understanding of the fossil diversity of the Jurassic Yanliao Flora in northern China.     

华北东部侏罗—白垩纪原型盆地及其演化

在残留盆地展布、地层发育特征以及控盆因素分析的基础上,恢复了华北东部侏罗—白垩纪的原型盆地格局。研究表明,早—中侏罗世,华北东部处于古亚洲构造域向滨太平洋构造域演化的过渡阶段,为弱挤压成盆期,发育中小型山间盆地,早期盆地走向以近EW向为主,晚期NNE向盆地更为发育;盆地早期的沉积表现为对印支期造成的低洼地区的充填,晚期则表现为披覆式沉积。晚侏罗—早白垩世,华北东部构造演化主要受滨太平洋构造域的控制,进入大规模裂陷或断陷盆地发育阶段,火山活动强烈,原型盆地的展布具有明显分区性,受NW/NWW向、NE/NNE向断裂系统的控制,拉张断陷、拆离断陷、反转断陷及走滑拉张型盆地在不同的地区分布。晚白垩世,华北东部隆起剥蚀,仅少数地区沉积充填。     

中国南方大地构造演化及其对油气的控制

按照板块构造理论及活动论、阶段论的思想，大致以中晚三叠世为界，将中国南方自震旦纪以来大地构造演化历史划分成海相盆地演化阶段（Z－T2）及陆相盆地演化阶级（T3－Q）两大阶段；又可进一步细分为扬子克拉通及其周缘裂谷盆地（Z－1q)、裂谷－克拉通－被动大陆边缘盆地（1c-O1）、被动陆缘－克拉通－前陆盆地（O2－S）、加里东运动（S末）、裂谷－克拉通盆地（D－T1）、克拉通残留海盆－弧后（浊积）盆地（T2）、印支运动（T2－T3）、华北－华南板块焊合、古特提斯封闭与前陆盆地的形成（T3－J2）、压扭背景下的改造作用及拉分盆地的形成（J3－K1）、伸展－裂陷盆地的形成（K2－E）、喜马拉雅运动（E末－N初）及披盖性构造层的形成（N－Q）12个阶段。特别是对南方自中晚三叠世以来的大地构造演化及其对现存油气的控制作用进行了系统研究，提出了晚侏罗世－早白垩世燕山运动对南方中生界、古生界原生油气藏的保存与破坏起到了决定性作用及燕山、喜马拉雅运动控制了现今南方原生、次生及再生烃（二次生烃）油气藏分布的新观点。