cast fossil
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English
[edit]
Noun
[edit]cast fossil (plural cast fossils)
- A fossil formed when an animal, plant, or other organism dies, its flesh decays and bones deteriorate due to chemical reactions; minerals gradually enter into the cavity, resulting in a cast, which is in the general form of the original organism.
Related terms
[edit]- mold fossil (the rock that surrounds the cast fossil in which the cavity is in the shape of the fossil)