Academic raceway fossils
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Academic Raceway Fossils. Grade 6. Fossils. Remains or evidence of a once living thing. Examples of fossils. bones, shells, pollen grains, seeds, and imprints of an organism. What do fossils tell us?. Appearance and activities of extinct organisms

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Academic Raceway Fossils

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Academic Raceway Fossils

Grade 6


Fossils

  • Remains or evidence of a once living thing


Examples of fossils

  • bones, shells, pollen grains, seeds, and imprints of an organism


What do fossils tell us?

  • Appearance and activities of extinct organisms

  • How living organisms have changed over time

  • Earth's climate has changed


  • Earth's surface has changed

  • Many different life forms have existed at different times in Earth's history


Trace fossils

  • Marks or evidence of animals tracks, trails, footprints, or burrows

The petrified lump of dinosaur dung is a "trace" fossil


How fossils formed:

  • Molds

  • Cast


Mold

  • empty spaces left when an organism decays


Cast

  • Created by molds filled in by minerals which harden


Tar pits, freezing, and amber

  • Preserves entire organism fossils


Imprints

  • Thin materials like leaves and feathers left in soft sediment which harden


Freezing

  • Preserved the woolly mammoth and furry rhinoceros

A 350,000-year-old skeleton of a woolly mammoth from Steinheim, Germany

November 2, 2001 - BBC


Tar pits

  • Preserved bison, camels,giant ground sloths, wolves, vultures & saber-toothed cats


Petrification

  • occurs when water containing minerals evaporates and the minerals replace the decaying material


An example of petrification

  • Petrified wood


amber

  • Hardened tree sap

  • Preserves whole insects


What type(s) of fossils have the same shape as the original organism

  • Imprints, Molds, and Casts


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