Burgess shale

基本解釋

Palaeontologists had long thought that many of the Burgess Shale animals are examples of experiments in evolution.
古生物學(xué)家曾一度以爲(wèi)佈爾吉斯生物群是實騐性進化的犧牲品。
The Burgess Shale came soon after a period of time known as the Cambrian explosion, when most major groups of complex animals arose over a surprisingly short period.
在寒武紀大爆發(fā)時期，主要生物種群的祖先在極短的時間內(nèi)相繼出現(xiàn)，佈爾吉斯葉巖就是在這之後的不久形成的。
The slabs of Burgess Shale that Walcott excavated contained the earliest known examples at the time of many major animal groups in the fossil record, in rocks that were about 505 million years old.
沃爾科特在伯吉斯頁巖中發(fā)現(xiàn)的古生物化石，囊括了五億五百萬年前地球上生活的多個主要物種，這是人類第一次發(fā)現(xiàn)這麼古老的化石。