A fossil is a type of fossil that is made up of a body part, a small animal, a small animal that is a living organism, a living organism, a small animal that is ... Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
化石のうち遺体の実体やその2次的な置換物が保存されないで,外形の印象だけが残ったもの。足跡やはった跡も印象化石に入れる場合がある。
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