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Remains of once living organisms. Form from decay and are buried by sediment. Sediment hardens into rock and preserves the shape of the organisms.

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Presentation on theme: "Remains of once living organisms. Form from decay and are buried by sediment. Sediment hardens into rock and preserves the shape of the organisms."— Presentation transcript:

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2 Remains of once living organisms. Form from decay and are buried by sediment. Sediment hardens into rock and preserves the shape of the organisms.

3 Fossils Remains Molds Casts Trace Fossils Petrification

4 Parts of the organism that remain after the soft parts (tissue) have decomposed. Ex: Teeth, shells, and skeletons

5 A hollow area in the ground or rock where a plant or animal was buried in sediment.

6 A solid copy of the shape of an organism that is created when dirt (sediment) fills a mold and becomes a rock. Molds and cast can preserve fine details.

7 Activities of organisms that have been preserved Ex: tracks, trails, burrows, coprolites (dinosaur poop)

8 Petrified means “turned into stone” Occurs when an organism’s tissues are completely replaced by minerals. This shows a piece of petrified wood.

9 Extremely thin coating of carbon or rock. Preserves the delicate parts of plant leaves and insects.

10 Paleontologist: scientist who study fossils gathering information about past life is called fossil record. Fossil Records build up a picture of the Earth’s past environments and organisms.

11 Fossil record reveal changes in organisms Older Rocks – fossils with simple organisms Newer Rocks – fossils with simple and complex organisms Evolution: change in living things over time Extinct: an organism that no longer exist and will never again live on Earth Ex. Dinosaurs, Wooly Mammoth


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