Burgess shale

基本解释

Palaeontologists had long thought that many of the Burgess Shale animals are examples of experiments in evolution.
古生物学家曾一度以为布尔吉斯生物群是实验性进化的牺牲品。
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.
在寒武纪大爆发时期，主要生物种群的祖先在极短的时间内相继出现，布尔吉斯叶岩就是在这之后的不久形成的。
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.
沃尔科特在伯吉斯页岩中发现的古生物化石，囊括了五亿五百万年前地球上生活的多个主要物种，这是人类第一次发现这么古老的化石。