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FOSSILS

FOSSILS. By: Brianna McCormick, Hannah Feder , and Natalie Gabel. Definition of a Fossil. The remains (or an impression) of a plant or animal that existed in a past geological age and has been excavated from the soil. WHERE CAN FOSSILS BE FOUND?.

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FOSSILS

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  1. FOSSILS By: Brianna McCormick, Hannah Feder, and Natalie Gabel

  2. Definition of a Fossil The remains (or an impression) of a plant or animal that existed in a past geological age and has been excavated from the soil

  3. WHERE CAN FOSSILS BE FOUND? Fossils may be found anywhere and everywhere there has been a dead plant or animal in the past

  4. HOW DO FOSSILS FORM? There are five different phases 1.) Death 2.) Deposition 3.) Permineralisation 4.) Erosion 5.)Exposure http://www.discoveringfossils.co.uk/whatisafossil.htm

  5. DIFFERENT TYPES OF FOSSILS The four types of fossils are: -mold fossils -cast fossils -trace fossils -true form fossils

  6. MOLD FOSSILS A mold fossil is a fossil that is molded onto a rock or mud if that the object turns into a mold or fossil it has to fossilize into something wet the dries up into something hard.

  7. CAST FOSSILS Cast fossils form when an organism dies and its body is covered by layers  of sediment. As time passes, the organism itself, particularly when composed primarily of softer materials, is eroded and carried away, leaving a negative imprint of its body.

  8. TRACE FOSSILS A trace fossil is also known as Ichnofossils. Ichnofossils are known as fossilized gastroliths burrows or footprints.

  9. TRUE FORM FOSSILS A true form fossil is fossils that are of the actual animal or animal part.

  10. BRACHIOPOD • Look like sea shells • -Bottom of clams • -Some drifted free • -Some burrowed into the mud

  11. CEPHALOPOD -In the Octopus Family -Hard cone-shaped shell -Only its head and arm stuck out

  12. BRYOZOAN -Moss-animals -Look like twigs or coral -Several tiny animals which built houses around themselves

  13. GASTROPOD -Carry their homes on their back -Move about by broad, muscular feet

  14. CRINOID -Sea Lily -Related to starfish -May be able to see a five point star

  15. HORN CORAL -Looks like a bull’s horn or dinosaur’s tooth -Attached to the ocean floor in the mud

  16. TRILOBITE -Looks like a roly-poly bug -Related to modern day insects, spiders, lobsters, and crabs -Shed their hard outer coverings

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