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Published byFrederick Kennedy Modified over 8 years ago
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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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Fossils Remains Molds Casts Trace Fossils Petrification
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Parts of the organism that remain after the soft parts (tissue) have decomposed. Ex: Teeth, shells, and skeletons
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A hollow area in the ground or rock where a plant or animal was buried in sediment.
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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.
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Activities of organisms that have been preserved Ex: tracks, trails, burrows, coprolites (dinosaur poop)
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Petrified means “turned into stone” Occurs when an organism’s tissues are completely replaced by minerals. This shows a piece of petrified wood.
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Extremely thin coating of carbon or rock. Preserves the delicate parts of plant leaves and insects.
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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.
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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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