Fossils - The shapes of dead animals and plants that lived millions of years ago. , pressure - forces the pieces of sediment together turning them into rock, Palaeontologist - Someone who studies dinosaurs , sedimentary - A type of rock that forms from materials called sediment from water or air., ammonite  - A type of fossil found in the Jurassic period. , rotting  - When something decays/decomposes ,

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