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三叶虫 3D Printer File Image 1
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三叶虫

BB Printing avatarBB Printing

December 20, 2025

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Description

为我助力

这是一个完整的三叶虫化石。

三叶虫是已灭绝的海洋节肢动物,其化石是古生代的标志。它们因背壳被两条纵沟分为一个轴叶和两个肋叶而得名。三叶虫身体明显分为头、胸、尾三部分,大多数在浅海底栖爬行或游泳生活,以细小生物为食。它们从寒武纪早期出现,在二叠纪末期完全灭绝,在漫长的地质历史中演化出了超过一万五千种物种。

License:

Standard Digital File License

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