cambrian-ordovician period
cambrian-ordovician period
寒武-奥陶系时期
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The research team that studied the fossils described them as Marine animals that lived during the early part of a period that followed the Cambrian, known as the Ordovician.
该研究小组认为，研究这些化石形容，在随后的一个时期的寒武系，奥陶系已知的早期的海洋动物生活的一部分他们。
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