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Semionotiformes ("flag-back form") is an order of primitive, ray-finned, primarily freshwater fish from the Triassic to the Cretaceous. The most well-known genus is ''Semionotus'' of Europe and North America. ==Timeline of genera== ImageSize = width:1500px height:auto barincrement:15px PlotArea = left:10px bottom:50px top:10px right:10px Period = from:-299 till:15 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:25 start:-299 ScaleMinor = unit:year increment:5 start:-299 TimeAxis = orientation:hor AlignBars = justify Colors = #legends id:CAR 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「Semionotiformes」の詳細全文を読む スポンサード リンク
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