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早期被子植物
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  “早期被子植物”译为未确定词的双语例句
     Since 1990s, with the discoveries of abundant rare fossils such as Confuciusornis sanctus, Sinosauropteryx prima, Eomaia scansoria and Archaefructus liaoningensis, western Liaoning has become the most famous area for the study of Mesozoic strata, the origin and evolution of primitive birds, primitive mammals and early angiosperms in China and even all over the world.
     20 世纪90 年代以来,随着热河生物群中以孔子鸟、中华龙鸟、始祖兽、辽宁古果为代表的大量珍稀化石的发现,辽西地区已成为全国乃至世界研究中生代陆相地层、原始鸟类、原始哺乳动物和早期被子植物起源与演化的独一无二的地区,其产出化石的丰富性、多样性等完全可与德国巴伐利亚州索伦霍芬地区以始祖鸟为代表的生物群相媲美。
短句来源
     Avaliable data show that the primitive angiospermous pollen grains of the genus Stellatopollis are major elements of early angiospermous microflora and useful in precisely dating and correlating Early Cretaceous sediments.
     这一发现进一步表明,这类花粉在早白垩世期间分布广泛,是早期被子植物花粉组合的重要组成部分,对大范围内的地层对比和早期被子植物演化的研究具有重要的价值。
短句来源
     The association of Eosestheria wit . Yan jiestheria and of Lycoptera and Kuntulunia with Eosestheria and Yanjiestheria, and the occurrence of early angiosperms and spore-pollen in the Fuxin Formation and its equivalents also demonstrate that the Lycopten-bearing bed should be assigned to the Cretaceous.
     Eosesthe- ria与Yanjiestheria,Lycoptera和Kuntulunia分别与Eosestheria和 Yanjiestheria等共生关系,以及阜新组及相当地层产早期被子植物和孢 粉化石,都印证狼鳍鱼岩层归属于白垩系。
短句来源
     After analysing the palynoglora in the basin,angiospermous pollen of 12 genus had been discoved. These angiospermus pollen are important data when research the development trend of angiospermous plant in early period and the divide of evolutional stage. It is also an important factor that defines the age of wangshi formation.
     通过对该盆内的孢子花粉样品进行分析鉴定,发现被子植物花粉化石12属,这些花粉是系统研究中国东部地区早期被子植物发展趋势与划分演化阶段的重要资料,也是确定盆地内王氏组时代的主要依据。
短句来源
     The theory and practice significance are pointed to study angiosperm pollen age at middle-late period of Early Cretaceous.
     在生产实践中,利用早期被子植物花粉演化规律的研究成果,可以解决地层的细分和全球地层时代的精确对比,以及古植被古气候演变等信息,因此也具有实践上的重要意义。
短句来源
  相似匹配句对
     ORIGIN AND EARLY EVOLUTION OF ANGIOSPERMS: RETROSPECT AND PROSPECTS
     被子植物起源和早期演化研究的回顾与展望
短句来源
     Early Osteoporosis
     早期骨质疏松
短句来源
     Some Problems on the Origin of Vascular Plants
     被子植物的起源
短句来源
     PREMATURE MENOPAUSE
     早期绝经
短句来源
     The Apomixis of Anthophyta
     被子植物的无融合生殖
短句来源
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  early angiosperm
Mesozoic paleogeography and early angiosperm history
      
Changes in Mesozoic paleogeography also appear to clarify several other puzzling aspects of early angiosperm history and distribution, including their early appearance at middle latitudes.
      
brasiliensis are discussed in a wider context, compared with data from otherMagnoliidae, and related to aspects of early Angiosperm evolution.
      


The Baisha Basin situated in the middle of the Hainan Island is a continental sedimentary basin of the Mesozoic in the southernmost part of China.The Cretaceous of the Baisha Basin is composed of the"red-bed arkose", and can be divided into two groups: the Lumuwan Group of Early Cretaceous and the Baowan Group of Late Cretaceous.The sporo-pollen fossils presented in this paper were encountered in the middle part of the Lumuwan Group. This assemblage is composed of 50 genera and 75 species, and characterized...

The Baisha Basin situated in the middle of the Hainan Island is a continental sedimentary basin of the Mesozoic in the southernmost part of China.The Cretaceous of the Baisha Basin is composed of the"red-bed arkose", and can be divided into two groups: the Lumuwan Group of Early Cretaceous and the Baowan Group of Late Cretaceous.The sporo-pollen fossils presented in this paper were encountered in the middle part of the Lumuwan Group. This assemblage is composed of 50 genera and 75 species, and characterized by the predominance of gymnospermous pollen (accounting for 83% of the total number in the assemblage), including 28 genera and 47 species. Spores of Pteridophyta comprise 20 genera and 25 species (accounting for 14.2% of the total number in the assemblage). In addition, there are also angiospermous pollen grains, such as Clavatipollenites hughesii,Asteropollis asteroides and Asteropollis microreticulatus (accounting for 2.8% of the total number in assemblage).This sporo-pollen assemblage probably belongs to the Aptian of Early Cretaceous, very likely indicating tropic-subtropical paleoclimate. At that time,the region was largely located in the transitional area between the arid zone and the equatorial damp zone established by Vachramcyev (1978).

本文是报道在海南白沙盆地中生代“红层”中首次发现的孢粉化石,介绍了这一孢粉组合的基本特征,共50属75种,其中包括早期被子植物花粉2属3种,将其地质时代确定为早白垩世的阿普第期。根据孢粉组合推论当时的古气候可能属于热带、亚热带,本区当时可能处于干旱气候带与潮湿赤道气候带之间的过渡地带。

Stellatopollis magifica sp. nov. was discovered from the Early Cretaceous Hadatu Formation of Nei Monggol,China. Avaliable data show that the primitive angiospermous pollen grains of the genus Stellatopollis are major elements of early angiospermous microflora and useful in precisely dating and correlating Early Cretaceous sediments.A new simple method was developed to undertake combined light and scanning eletron microscopy of the same pollen grain.

本文描述了首次发现于我国早白圣世的原始被子植物花粉Stellatopollis。这一发现进一步表明,这类花粉在早白垩世期间分布广泛,是早期被子植物花粉组合的重要组成部分,对大范围内的地层对比和早期被子植物演化的研究具有重要的价值。本文还介绍了我们所使用的对同一粒花粉进行光镜和扫描电镜联合观察照相的一种既简单又经济的方法.

The Lycoptera-bearing bed lies over the upper part of the Upper Jurassic, which has been verified by the fossil evidence such as the Nestoria-Keratestheria fauna and the Ostracod Eoparacypris-Luanpingella-Darwinula assemblage from the Debei gou Formation (in a narrow sense) and by the age 145.2 Ma as determined with the Rb-Sr isochron method of the Beiqi Formation, and the complete stratigraphical sequence in the Yanliao region. The Jehol fauna includes primitive Trigonioidids, Eosestheria and Lycoptera etc....

The Lycoptera-bearing bed lies over the upper part of the Upper Jurassic, which has been verified by the fossil evidence such as the Nestoria-Keratestheria fauna and the Ostracod Eoparacypris-Luanpingella-Darwinula assemblage from the Debei gou Formation (in a narrow sense) and by the age 145.2 Ma as determined with the Rb-Sr isochron method of the Beiqi Formation, and the complete stratigraphical sequence in the Yanliao region. The Jehol fauna includes primitive Trigonioidids, Eosestheria and Lycoptera etc. and their own laws of evolution expound that they belong to the Cretaceous faunas. The association of Eosestheria wit . Yan jiestheria and of Lycoptera and Kuntulunia with Eosestheria and Yanjiestheria, and the occurrence of early angiosperms and spore-pollen in the Fuxin Formation and its equivalents also demonstrate that the Lycopten-bearing bed should be assigned to the Cretaceous.The confirmation of the existence of Aucellina in the Jixi Group and the correlation of Trigonioidids and Cyprididae with those in the equivalent strata of Japan and W. Europe have also verified the existence of the corresponding Cretaceous marine strata. The palaeomagnetic stratigraphical data from Zhejiang and the Song-liao area have ascertained that in China the Cretaceous Mo between the lower mixed polarity zone and the middle normal polarity zone is located in the upper member of the Huangjian Formation of the Jiande Group and the top member of the Deng-louku Formation. Moreover, the isotopic age data obtained from the Jehol and Jiande Groups show that the approximate geological age of the Lycoptera bed is 135-122 Ma. All this has proved that the Lycoptera bed should be attributed to the Cretaceous.

在燕辽区,狭义的大北沟组产Nestoria-Keratestheria群,Eopa- racypris-Luanpingella-Darwinula组合等化石,白旗组的Rb-Sr等时 线年龄为145.2Ma,以及完整的层序关系均证明狼鳍鱼岩层覆于上侏 罗统之上。热河动物群包括原始Trigonioidids群,Eosestheria群, Lycoptera群…以自身的演化规律阐明其属于白垩系的类群。Eosesthe- ria与Yanjiestheria,Lycoptera和Kuntulunia分别与Eosestheria和 Yanjiestheria等共生关系,以及阜新组及相当地层产早期被子植物和孢 粉化石,都印证狼鳍鱼岩层归属于白垩系。鸡西群中Aucellina的确认和依Trigonioidids和Cvprididae等化石,同西欧及日本相当岩层的对比,得到相应海相层的验证。浙江和松辽的磁性地层资料,初步确定了我国白垩系下部混合极性带和中部正极性带间M_0位于建德群黄尖组上段和登楼库组顶段,以及热河群和建德群放射性同位素年龄数据表明狼鳍鱼岩层的近似地质年龄为135—122Ma。这些都证明狼鳍鱼岩层...

在燕辽区,狭义的大北沟组产Nestoria-Keratestheria群,Eopa- racypris-Luanpingella-Darwinula组合等化石,白旗组的Rb-Sr等时 线年龄为145.2Ma,以及完整的层序关系均证明狼鳍鱼岩层覆于上侏 罗统之上。热河动物群包括原始Trigonioidids群,Eosestheria群, Lycoptera群…以自身的演化规律阐明其属于白垩系的类群。Eosesthe- ria与Yanjiestheria,Lycoptera和Kuntulunia分别与Eosestheria和 Yanjiestheria等共生关系,以及阜新组及相当地层产早期被子植物和孢 粉化石,都印证狼鳍鱼岩层归属于白垩系。鸡西群中Aucellina的确认和依Trigonioidids和Cvprididae等化石,同西欧及日本相当岩层的对比,得到相应海相层的验证。浙江和松辽的磁性地层资料,初步确定了我国白垩系下部混合极性带和中部正极性带间M_0位于建德群黄尖组上段和登楼库组顶段,以及热河群和建德群放射性同位素年龄数据表明狼鳍鱼岩层的近似地质年龄为135—122Ma。这些都证明狼鳍鱼岩层应划归白垩系。

 
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