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国家自然科学基金(40372008)

作品数:13 被引量:76H指数:6
相关作者:姜宝玉蔡华伟沙金庚陈澌苇张武更多>>
相关机构:中国科学院南京地质古生物研究所南京大学国土资源部更多>>
发文基金:国家自然科学基金国家重点基础研究发展计划中国科学院知识创新工程更多>>
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13 条 记 录,以下是 1-10
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中国侏罗纪年代地层学研究的现状被引量:21
2005年
“国际地层表”依据菊石带建立起来的侏罗纪年代地层系统在全球海相侏罗系的划分和对比中有着广泛的应用,但却很难直接应用于非海相侏罗纪地层系统中。中国的侏罗系多属非海相,近年来我国地质工作者们不但将中国的海相侏罗系与全球侏罗纪年代地层系统进行了较合理的对比,发现了穿越海相三叠系-侏罗系界线的连续沉积的剖面,而且建立了非海相侏罗系的阶。
沙金庚
关键词:海相地层侏罗系年代地层学国际地层表
New discovery of fossil cycad-like plants from the Middle Jurassic of West Liaoning,China被引量:9
2005年
WANG YongdongZHANG WuZHENG ShaolinSAIKI Keni'chiLI Nan
关键词:植物化石种子植物
ADDITIONAL DATA ON TODITES (OSMUNDACEAE,FILICALES) FROM THE LOWER JURASSIC-WITH SPECIAL REFERENCES TO THE PALAEOGEOGRAPHICAL AND STRATIGRAPHICAL DISTRIBUTIONS IN CHINA
<正>The family Osmundaceae is among the most primitive ferns of the Filicales showing particular interest in te...
Frédéric THEVENARD
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Xingxueanthus: An Enigmatic Jurassic Seed Plant and Its Implications for the Origin of Angiospermy被引量:13
2010年
The origin of angiosperms has been tantalizing botanists for centuries. Despite the efforts of palaeobotanists, most of the pre-Cretaceous angiosperms are regarded either non-convincing or misdated. The applications of SEM and LM (light microscope) enable us to recognize a coalified fossil plant, Xingxueanthus sinensis gen. et sp. nov., from the Haifanggou Formation (Middle Jurassic, 〉160 Ma) in western Liaoning, China. Xingxueanthus is an "inflorescence" with more than 20 female units spirally arranged. Each female unit is situated in the axii of a bract. The female unit is composed of an ovule-container and a style-like projection at the top. There is a vertical column bearing several ovules in the ovule-container. The general morphology and the internal structure of Xingxueanthus distinguish itself from any known fossil and extant gymnosperms, and its structures are more comparable to those of angiosperms. Xingxueanthus, if taken as a gymnosperm, would represent a new class, demonstrate an evolutionarily advanced status of ovule-protection in gymnosperms never seen before, and provide new insights into the origin of angiospermy. Alternatively, if taken as an angiosperm, together with Schmeissneria, it would increase the diversity of Jurassic angiosperms, which has been underestimated for a long time, and suggest a much earlier origin of angiospermy than currently accepted.
WANG XinWANG Shijun
关键词:ANGIOSPERMFLOWERORIGINLIAONINGJURASSIC
黑龙江省东部白垩纪含煤地层简介被引量:6
2005年
黑龙江省东部早白垩世含煤地层的分布特点是西部含煤层多、厚度大,向东含煤层数量减少、厚度减薄,大型矿区也主要分布在西部。该区的含煤盆地多为向斜盆地,含煤情况比较好的大型矿井都在向斜的北翼,而向斜南翼基本没有形成较好的煤层。在含煤盆地内,距断陷中心较远且沉降幅度不大的地区通常具有较好的聚煤条件,而在沉降幅度较大、沉积地层较厚的沉降中心地带反而没有形成良好的可采煤层。含煤地层的分布特点反映了本区成煤期构造、古地理和古气候的演化历史。根据生物地层学证据,可将鸡西群和龙爪沟群进行对比,它们的时代无疑应为早白垩世。
朴太元蔡华伟姜宝玉
关键词:含煤地层早白垩世鸡西群龙爪沟群
PRELIMINARY INVESTIGATION ON THE LATE JURASSIC PETRIFIED FOREST IN SHEHONG OF SICHUAN,CHINA
<正>Since 2001, rich silicified wood specimens have been discovered from the Longfeng Gorgy Scenic area of Ming...
Yongdong WANG 1
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An Undercover Angiosperm from the Jurassic of China被引量:7
2010年
Searching for early angiosperms is a riveting activity in botany because it helps to resolve the phyiogenetic relationships among seed plants and among angiosperms themselves. One of the challenges for this job is what the target fossils look like. Most possibly early angiosperms may elude our scrutiny with gymnospermous appearances. This possibility becomes a reality in a Jurassic plant, Solaranthus gen. nov, which bears a peltaspermalean appearance and enclosed ovules. According to knowledge available hitherto, the latter feature makes it an angiosperm. However, such a feature is more likely to be eclipsed by its gymnospermous appearance. The early age and unexpected character assemblage of Solaranthus urge for a fresh look on the assumed-simple relationship between angiosperms and gymnosperms. Its resemblance to the order Peltaspermales favors the Mostly Male Theory.
ZHENG ShaolinWANG Xin
关键词:FLOWERJURASSICANGIOSPERMS
An AFM Observation on Fossil Cytoplasm被引量:1
2008年
Fossil cytoplasm is a new research topic of interest in paleobotany. Atomic force microscope (AFM) is a new technology applied widely in physics and biology; however, it is rarely used in paleontology. Here we applied AFM for the first time to study fossil cytoplasm. The results indicate that the fossil cytoplasm is heterogeneous and full of ultrastructures, just like extant cytoplasm, and that the application of AFM, especially in combination with other techniques, can reveal the subcellular details of fossil plants with more confidence.
WANG XinYU JunpingFANG Xiaohong
关键词:CYTOPLASMFOSSILAFMPLANT
塔里木盆地库车坳陷中侏罗统的一些双壳类被引量:3
2005年
系统描述库车坳陷中侏罗统的双壳类3 属4 种。根据双壳类Kija铰合构造变异范围的研究,认为Acyrena、Pseudocardinia、Jiangxiella、Apseudocardinia、Hunanella、Yananoconcha、Hamiconcha和Fengjiachonia都是Kija 的同物异名。库车坳陷中侏罗统的双壳类化石属于Lamprotula (Eolamprotula) cremeri Kija (=Pseudocardinia) kweichouensis动物群,分为Kija ovalis K. kweichouensis和Lamprotula (Eolamprotula) guan gyuanensis Margaritifera? cf. isfarensis两个化石组合。Kija ovalis K. kweichouensis组合产于克孜勒努尔组和恰克马克组下部,时代为中侏罗世早期,可能主要为阿林期至巴柔期;Lamprotula (Eolamprotula) guangyuanen sis Margaritifera? cf. isfarensis组合主要分布于恰克马克组中上部,时代为中侏罗世晚期,可能主要为巴通期至卡洛夫期。
姜宝玉蔡华伟陈澌苇
关键词:中侏罗统塔里木盆地双壳类化石同物异名化石组合
辽西中侏罗世苏铁类型植物的新发现被引量:2
2005年
简要报道辽宁省西部北票长皋地区新近发现的具解剖构造的苏铁类型植物茎干化石.化石材料采自中侏罗统的蓝旗组(髫髻山组),保存完好的茎干化石横切面所具有的髓部、中始式木质部圆筒、皮层、叶柄基和鳞片基,以及髓中的薄壁细胞、转输细胞、黏液腔和木质部束等结构构造,表明这些化石材料可能代表了一个与苏铁类系统学关系更加密切而又相对独立的类群或者分类单元.
王永栋张武郑少林斋木健一李楠
关键词:苏铁类中侏罗世植物薄壁细胞髫髻山组中侏罗统
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