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| 1 | Two New Fossil Sawflies(Hymenoptera,Xyelidae,Xyelinae) from the Middle Jurassic of China显示文摘Two new genera with two new species of sawflies,Cathayxyela extensa gen.et sp.nov.and Aequixyela immensa gen.et sp.nov.,from the Middle Jurassic Jiulongshan Formation of southeastern Inner Mongolia,China,are assigned to the subfamily Xyelinae(Hymenoptera,Xyelidae).Cathayxyela gen.nov.can be distinguished by the third antennal article longer than the head; mesoprescutum and mesoscutellum nearly equal in length; the forewing with Sc meeting C before the junction of 1-M and 1-Rs; a weak and narrow pterostigma; and 3-Cu at least 1.5 times longer than the 1m-cu.Aequixyela gen.nov.is characterized by the third antennal article nearly as long as the head; the forewing with Rs+M approximately equal to 2-Rs in length; 2m-cu inclined toward the wing base and nearly reaching the middle of cell 3rm; 1m-cu as long as the 2-Cu and 3-Cu; and the cell 2cua of regular hexagonal shape. | WANG Mei Alexandr P.RASNITSYN REN Dong | 2014 | Acta Geologica Sinica(English Edition)2014，88，4： | 5 |
| 2 | A New Fossil Hangingfly(Mecoptera: Cimbrophlebiidae) from the Early Cretaceous of China显示文摘A new species, Cimbrophlebia rara sp. nov., in the family Cimbrophlebiidae(Mecoptera) is described and illustrated. This specimen was collected from the Early Cretaceous Yixian Formation at Liutiaogou in Inner Mongolia, China. This is the first record of a cimbrophlebiid from the Jehol biota. A key to all species of Cimbrophlebia is given. A preliminary review of published taxa data indicates that from the Middle Jurassic to the Early Cretaceous, Mecoptera became less diverse and less abundant in northeastern China at familiar level(from 11 to 6), generic level(from 32 to 8) and specific level(from 44 to 14). | WANG Chen SHIH Chungkun REN Dong | 2014 | Acta Geologica Sinica(English Edition)2014，88，1： | 4 |
| 3 | A New Angiosperm Genus from the Lower Cretaceous Yixian Formation, Western Liaoning, China显示文摘The abundant fossils of early angiosperms found in the Yixian Formation (125 Ma, Early Cretaceous) have demonstrated unexpectedly high diversity and various reproductive strategies, and thus have shed new light on early angiosperm evolution. Here, using light microscope and scanning electron microscope, we document several fructifications of Baicarpus gen. nov. from Liaoning province, China. Each fructification of the new taxon includes several apocarpous carpels/fruits attached in an urn-formed gynobase. Each fruit/carpel has a persistent straight style and an ovary enclosing a single seed. These fossil plants demonstrate a new floral organization and thus enhance our understanding of the diversity of angiosperms in the Yixian Formation. Together with previously reported ones, this fossil angiosperm suggests an origin time for angiosperms earlier than widely accepted. | HAN Gang FU Xiao-ping LIU Zhong-jian WANG Xin | 2013 | Acta Geologica Sinica(English Edition)2013，87，4： | 3 |
| 4 | 地质学报,2012年,第86卷,总目次显示文摘 | | 2012 | 地质学报2012，86，12： | 0 |
| 5 | 膜翅目广腰亚目化石的研究简史与现状(昆虫纲)显示文摘详细回顾和综述了世界膜翅目广腰亚目昆虫化石研究简史,列出已发表的化石种类名录、分布及年代,说明了不同地质时期主要广腰亚目化石的分类单元以及分布特点。简要介绍了广腰亚目化石昆虫发展趋势及广腰亚目昆虫群落特征。初步分析了目前该类群所存在的一些问题,并对今后的研究工作进行了展望。 | 王梅 傅彤 史宗冈 任东 | 2012 | 动物分类学报2012，37，4： | 0 |
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