...microfossils found in abundance in the Gunflint chert distributed on the shores of Lake Superior in Ontario, Canada, are thought to be fossils that are about 1.9 billion years old. In 1954, ES Berghorn and SA Tyler reported these microfossils from Schreiber on the north shore of Lake Superior, which led to the discovery of fossils in Precambrian strata around the world, significantly increasing our knowledge of the biota of this period. *Some of the terminology explanations that refer to the "Gunflint Chart" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…カナダのオンタリオ州スペリオル湖岸に分布するガンフリントチャートから多量に産出する微化石群で,約19億年前の化石とされている。1954年,E.S.バーグホーンとS.A.タイラーがスペリオル湖北岸のシュライバーからこの微化石を報告したのが端緒となって,世界各地の先カンブリア時代の地層から化石が発見されるようになり,この時代の生物相に関する知識は著しく増大した。… ※「ガンフリントチャート」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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