New gomphaeschnids and progobiaeshnids from the Yixian Formation in Liaoning Province (China) illustrate the tremendous Upper Mesozoic diversity of the aeshnopteran dragonflies |
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| Authors: | Yongjun Li André Nel Dong Ren Hong Pang |
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| Institution: | 1. State Key Laboratory of Biocontrol and Institute of Entomology, Sun Yat-Sen University, 510275 Guangzhou, China;2. CNRS UMR 7205, CP 50, Entomologie, Muséum National d’Histoire Naturelle, 45, rue Buffon, 75005 Paris, France;3. College of Life Sciences, Capital Normal University, 100048 Beijing, China |
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| Abstract: | One new genus and five new species of dragonflies (Odonata) are described and figured from the Yixian Formation of northeastern China, viz. two gomphaeschnids Sinojoria magna nov. sp. and S. cancellosa nov. sp., plus three progobiaeshnids Mongoliaeshna hadrens nov. sp., M. exiguusens nov. sp., and Decoraeshna preciosus nov. gen., nov. sp. These new discoveries confirm the apparently sudden great diversification in China of the clade Aeshnoptera during the Middle-Upper Jurassic, together with the Upper Mesozoic to modern lineages of dragonflies. At the same time, some ‘ancient’ groups of Odonata became extinct. |
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