共查询到20条相似文献，搜索用时 390 毫秒
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Eric Robinson 《Geology Today》2003,19(6):219-222
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J. N. Jennings 《Australian Journal of Earth Sciences》2013,60(2):609-611
T. Obeblander, The Zagros Streams: A New Interpretation of Transverse Drainage in an Orogenic Zone. Syracuse Geographical Series No. 1, Syracuse University Press, Syracuse, 1965. pp. xii + 168, 71 plates and text‐figures. 相似文献
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Biswajeet Pradhan 《地学前缘(英文版)》2021,12(6):354-355
Energy is a vital commodity that sustains human lives,as well as eco-nomic processes.The challenges towards energy generation,demand and supply are plenty owing to the use of fossil fuels leading to climate change and environmental problems like water and air pollution.With the increasing awareness over climate change,post Paris Agreement,the role of energy plays a key role towards achieving the proposed tar-get.The contributions in this Special Issue of Geoscience Frontiers on En-ergy includes 8 papers from esteemed research groups worldwide which explores,highlights and provide new insights towards the vari-ous aspects of energy. 相似文献
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《Geology Today》1996,12(2):46-54
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Palaeomanicapsocus margoae gen. et sp. nov. and Palaeomanicapsocus fouadi gen. et sp. nov. are characterized, described, illustrated, from the Cretaceous Burmese amber. Their phylogenetic position is discussed. These fossil taxa are the first manicapsocid barklice to be described from the Burmese amber. 相似文献
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Paraelectrentomopsis chenyangcaii gen. et sp. nov. from the Cretaceous Burmese amber is characterized, described, illustrated and its position is discussed. This fossil taxon is the second compsocid barklouce to be described from the Burmese amber and constitute one of the earliest records of the family. A checklist of known Compsocidae is given. Identification keys of all known Compsocidae are provided. A palaeobiogeography scenario is proposed. 相似文献
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A new species, Foveopsis heteroidea sp. nov. is described from the mid-Cretaceous Burmese amber based on four well-preserved specimens. The abundance and distribution of sensory pits in adult Perforissidae may not be considered as classification character. Well-preserved wing-coupling apparatus and nodal line indicate Perforissidae should have a moderately versatile flight capability, and with the help of atmospheric flow, Perforissidae had a broad geographical distribution in Cretaceous. Sexual difference of new species is briefly discussed, indicates it in planthopper has already existed in the Cretaceous. 相似文献
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Middle Jurassic Coptoclavidae (Insecta:Coleoptera:Dytiscoidea) from China:a Good Example of Mosaic Evolution 总被引：2，自引：2，他引：0
<正>Adults of the aquatic coptoclavid beetles(Coleoptera:Adephaga:Dytiscoidea),described from four Middle Jurassic fossil localities in Inner Mongolia and Liaoning in northeastern China,are attributed to Daohugounectes primitives Wang,Ponomarenko and Zhang,2009,which was previously proposed after study of larvae.The generic name Timarchopsis Brauer,Redtenbacher and Ganglbauer,1889 is proposed as a substitute for the preoccupied and junior homonym Necronectes Ponomarenko,1977,non Milne-Edwards,1881. Furthermore,the subfamily name Necronectinae Ponomarenko,1977 is substituted by the available name Timarchopsinae.Daohugounectes is placed into Timarchopsinae because its adults have long,slightly apically widened tibiae and small femoral plates.The adults of this genus differ from those of other Timarchopsinae in the following features:antennae short and widened in the middle part;basal segments of protarsi not cut apically; metaventrite with a triangular plate.The larvae look like somewhat primitive forms in the subfamily Timarchopsinae.In contrast to these primitive larvae,the adults with some advanced characters can be regarded as among the most advanced forms in the subfamily Timarchopsinae,and probably represent a transition between the Timarchopsinae and Charanoscaphinae.Such mosaic evolution within Daohugounectes indicates that the evolutionary process of aquatic beetles is far more complex than previously thought. 相似文献