Burgess Shale
A rock formation in the Canadian Rockies that contains very many fossils from the Cambrian period.
plural of photocopier
(mineralogy) A triclinic-pinacoidal mineral containing arsenic, hydrogen, iron, and oxygen.
A speech, given by U.S. President Abraham Lincoln at Gettysburg, Pennsylvania on November 19, 1863, in memory of the Battle of Gettysburg, which has been fought there the past July.
私がカナダのロッキー山脈にあるカンブリア紀の化石を大量に含む有名な岩層を訪れたとき、そこで保存されている化石の驚くべき多様性に感銘を受けました。
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