最終更新日：2025/12/06
The fossilized shells were pseudomorphosing into silica nodules, preserving their shapes while losing their original composition.
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The fossilized shells were pseudomorphosing into silica nodules, preserving their shapes while losing their original composition.
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元となった例文
化石化した貝殻はシリカの塊へ仮晶化しており、形状は保たれながらも元の組成は失われていた。
