New data on Early Cretaceous odonatans (Stenophlebiidae,Aeschnidiidae) from northern China |
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| Institution: | 1. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China;2. Department of Earth Sciences, The University of Hong Kong, Hong Kong Special Administrative Region;3. Department of Earth Sciences, The Natural History Museum, London SW7 5BD, UK;4. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1, Beichen West Road, Beijing 100101, China;1. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China;2. School of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China;1. Résidence Croix du Sud, Rue Henri de Montherlant, F-33400 Talence, France;2. Muséum National d''Histoire Naturelle, Institut de Systématique, Evolution, Biodiversité, ISYEB, UMR 7205 CNRS UPMC EPHE, CP50, 45 rue Buffon, F-75005 Paris, France;1. Section of Earth & Environmental Sciences, University of Geneva, Rue des Maraîchers 13, 1205 Geneva, Switzerland;2. Institute of Earth Sciences, University of Lausanne, Géopolis, 1015 Lausanne, Switzerland;3. Museum d''Histoire Naturelle, Paris, France;4. JdL Centre & Department of Applied Geology, Curtin University; GPO Box U1987, Perth, WA 6845, Australia;5. Institute of Earth Surface Dynamics, University of Lausanne, Géopolis, 1015 Lausanne, Switzerland;6. Department of Geology, Université Pierre et Marie Curie, Paris, France;1. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China;2. Department of Earth Sciences, The University of Hong Kong, Hong Kong Special Administrative Region;3. Institut de Systématique, Évolution, Biodiversité, ISYEB-UMR 7205-CNRS, MNHN, UPMC, EPHE, Muséum National d''Histoire Naturelle, Sorbonne Universités, 57 Rue Cuvier, CP 50, Entomologie, F-75005, Paris, France;4. Department of Earth Sciences, The Natural History Museum, London SW7 5BD, UK;5. The PLA Information Engineering University, 62 Kexue Ave, Gaoxin District, Zhengzhou 450002, Henan, China;6. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1, Beichen West Road, Beijing 100101, China;1. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China;2. Department of Earth Sciences, The University of Hong Kong, Hong Kong Special Administrative Region, China;3. Institut de Systématique, Évolution, Biodiversité, ISYEB-UMR 7205-CNRS, MNHN, UPMC, EPHE, Muséum National d''Histoire Naturelle, Sorbonne Universités, 57 rue Cuvier, CP 50, Entomologie, F-75005, Paris, France;4. Department of Earth Sciences, The Natural History Museum, London SW7 5BD, UK;5. Goglio (Tianjin) Packaging Co. Ltd, No. 99, West 11th Avenue, Airport Economic Area, Tianjin, China;6. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1, Beichen West Road, Beijing 100101, China;1. State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing 210008, China;2. Department of Earth Sciences, The University of Hong Kong, Hong Kong Special Administrative Region;3. Institut de Systématique, Évolution, Biodiversité, ISYEB-UMR 7205-CNRS, MNHN, UPMC, EPHE, Muséum national d''Histoire naturelle, Sorbonne Universités, 57 rue Cuvier, CP 50, Entomologie, F-75005, Paris, France;4. Department of Earth Sciences, The Natural History Museum, London SW7 5BD, UK;5. Goglio (Tianjin) Packaging Co. Ltd, No. 99, West 11th Avenue, Airport Economic Area, Tianjin, China;6. Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1, Beichen West Road, Beijing 100101, China |
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| Abstract: | Liaostenophlebia yixianensis gen. et sp. nov., a new stenophlebiid damsel-dragonfly, is described from the Lower Cretaceous Yixian Formation of western Liaoning, northern China. It is the third Chinese damsel-dragonfly belonging to the family Stenophlebiidae to be described. Liaostenophlebia gen. nov. differs from the other genera of Stenophlebiidae in having Ax2 shifted just above MAb, a transverse and narrow Hal, a more curved anterior side of the hypertriangle, and a broader cubital-anal area. Sinostenophlebia zhanjiakouensis Hong, 1984 was previously attributed to Stenophlebiidae and hardly compares with other genera within this family. A check of the plates of the type species (Sinostenophlebia zhanjiakouensis Hong, 1984) suggests that Sinostenophlebia Hong, 1984 should be a member of the family Aeschnidiidae and it is very likely that this genus is a junior synonym of Leptaeschnidium Pritykina, 1977. The new data increases the diversity of both Stenophlebiidae and Aeschnidiidae in the Lower Cretaceous of China. |
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| Keywords: | Stenophlebiidae Aeschnidiidae Odonata Yixian Formation Cretaceous China |
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