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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Xalnene Tuff footprints ： ウィキペディア英語版 Xalnene Tuff footprints The Xalnene Tuff footprints are a geological academic controversy, concerning a 2005 discovery of 269 markings in a geological layer in the Valsequillo Basin south of the city of Puebla, Mexico, which were originally interpreted to be human and animal footprints. The layer was variously dated to 40 000 years Before Present (BP) or 1.3 million years BP, both dates significantly before the currently accepted date for the settlement of the Americas. A 2010 study argues that the marks were made by recent mining activities. ==Past theories== The Clovis people were at one time considered to be the first inhabitants of the Americas, migrating into the area 13 100 years BP. However, tools, bone structures, genetics, and languages indicate that the early Americans were from many origins, and there have been some sites dated to 15-16 000 years BP.〔Darren F. Mark, Silvia González, David Huddart, Harald Böhnel (2010) Dating of the Valsequillo volcanic deposits: Resolution of an ongoing archaeological controversy in Central Mexico. Journal of Human Evolution vol. 58, pages 441-445.〕 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「Xalnene Tuff footprints」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.