The Burgess Shale formation also has fossils of many extinct representatives of modern animal groups.

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。

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The Burgess Shale formation also has fossils of many extinct representatives of modern animal groups.

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。

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