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Microraptoria (Greek, μίκρος, mīkros: "small"; Latin, raptor: "one who seizes") is a clade of paravian theropods known for long feathers on their legs They appeared 125 million years ago in China. Many may have been semi-arboreal gliders. Microraptorians were relatively small; adult specimens of ''Microraptor'' range between ) and weigh up to , making them some of the smallest known dinosaurs.〔Holtz, Thomas R. Jr. (2011) ''Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages,'' (Winter 2010 Appendix. )〕〔Chatterjee, S., and Templin, R.J. (2007). "Biplane wing planform and flight performance of the feathered dinosaur ''Microraptor gui''." ''Proceedings of the National Academy of Sciences'', 104(5): 1576-1580. ()〕 The largest, ''Hesperonychus'', ''Graciliraptor'' and ''Sinornithosaurus'', were no more than 1.8 metres long.〔 ==Classification== Microraptoria is usually classified as clade of dromaeosaurid. Senter and colleagues expressly coined the name without the subfamily suffix ''-inae'' to avoid perceived issues with erecting a traditional family-group taxon, should the group be found to lie outside dromaeosauridae proper. Sereno offered a revised definition of the sub-group containing ''Microraptor'' to ensure that it would fall within Dromaeosauridae, and erected the subfamily Microraptorinae, attributing it to Senter ''et al.'', though this usage has only appeared on his online TaxonSearch database and has not been formally published.〔Sereno, P. C. 2005. (Stem Archosauria—TaxonSearch ) [version 1.0, November 7, 2005〕 The cladogram below follows a 2012 analysis by paleontologists Phil Senter, James I. Kirkland, Donald D. DeBlieux, Scott Madsen and Natalie Toth. |label2=Microraptoria |2= |2= }} }} }} }} }} }} }} }} 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Microraptoria」の詳細全文を読む スポンサード リンク
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