Fossil: The leftover sign of a plant or animal that lived long, long ago., Decay: When something dead slowly rots away., Body fossil: An actual part of an ancient animal or plant that turned to rock (like bones or teeth)., Trace fossil: A sign that an animal was there (like a footprint or burrow)., Coprolite: Fossilized dinosaur poop!, Sediment: Tiny bits of rock, sand, and dirt that settle at the bottom of water.

Fossilisation

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