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Yawunik Yawunik is an extinct genus of Cambrian ''leanchoiliid'' arthropod known from the Burgess Shale in Canada (Marble Canyon locality). The type species has been named ''Y. kootenayi'' after the Kootenay, both a geographic area (and National Park, where the fossil was found) and North American First Nation, also known as the Ktunaxa. The fossil dates back to 508 million years ago. ==References==
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「Yawunik」の詳細全文を読む
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