伯吉斯页岩地层中也有许多代表着现代动物群中已经灭绝的物种的化石。
The Burgess Shale formation also has fossils of many extinct representatives of modern animal groups.
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。
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。
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.
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