Last Updated:2025/12/07

The phragmoconic shell of the fossilized cephalopod displayed delicate septa and a series of gas-filled chambers that regulated buoyancy.

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The phragmoconic shell of the fossilized cephalopod displayed delicate septa and a series of gas-filled chambers that regulated buoyancy.

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化石化した頭足類の隔室で構成された殻は、精細な隔壁と浮力を調節する一連の気室を示していた。

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