Fossils

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Fossils

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  1. The Fossil Recordand Index Fossils

    Slide 1 - The Fossil Recordand Index Fossils

  2. Fossil- Any evidence of earlier life preserved in a rock

    Slide 2 - Fossil- Any evidence of earlier life preserved in a rock

  3. Elrathia kingii

    Slide 3 - Elrathia kingii

  4. Original Remains-Actual, unchanged remains of a plant or animal.

    Slide 4 - Original Remains-Actual, unchanged remains of a plant or animal.

  5. Replaced Remains-The soft parts have disappeared and the hard parts have been replaced by mineral material.

    Slide 6 - Replaced Remains-The soft parts have disappeared and the hard parts have been replaced by mineral material.

  6. Molds and Casts-Hollow depression left in a rock form the hard parts of an organism.  The new material fills in to make the cast.

    Slide 10 - Molds and Casts-Hollow depression left in a rock form the hard parts of an organism. The new material fills in to make the cast.

  7. Trace Fossils-Evidence of life other than the remains of a plant or animal.

    Slide 14 - Trace Fossils-Evidence of life other than the remains of a plant or animal.

  8. Index Fossils-Fossils that are used to identify the relative age of the rock.

    Slide 18 - Index Fossils-Fossils that are used to identify the relative age of the rock.

    • Sacabambaspis
    • Only found during the Ordovician
  9. Three Characteristics of Index Fossils

    Slide 19 - Three Characteristics of Index Fossils

    • Easy to identify
    • Widespread in occurrence
    • Limited in time
  10. Index Fossils ESRT pg 8 & 9

    Slide 20 - Index Fossils ESRT pg 8 & 9

    • Bottom of page 8
    • Bottom of page 9
    • Each Index Fossil has a letter,
    • picture, and a name.
  11. During which period was Elliptocephala on Earth?

    Slide 21 - During which period was Elliptocephala on Earth?

  12. Slide 22

    • Cenozoic
    • Mesozoic
    • Paleozoic
    • Quaternary
    • Cretaceous
    • Paleogene
    • Neogene
    • Permian
    • Triassic
    • Jurassic
    • Ordovician
    • Cambrian
    • Devonian
    • Silurian
    • Pennsylvanian
    • Mississippian
  13. Notice the fine print at the top of the column.

    Slide 23 - Notice the fine print at the top of the column.

  14. Slide 24

    • Cenozoic
    • Mesozoic
    • Paleozoic
    • Quaternary
    • Cretaceous
    • Paleogene
    • Neogene
    • Permian
    • Triassic
    • Jurassic
    • Ordovician
    • Cambrian
    • Devonian
    • Silurian
    • Pennsylvanian
    • Mississippian
  15. Slide 25

    • Cenozoic
    • Mesozoic
    • Paleozoic
    • Quaternary
    • Cretaceous
    • Paleogene
    • Neogene
    • Permian
    • Triassic
    • Jurassic
    • Ordovician
    • Cambrian
    • Devonian
    • Silurian
    • Pennsylvanian
    • Mississippian
  16. Key Beds-a single rock layer that has the same characteristics as an index fossil

    Slide 26 - Key Beds-a single rock layer that has the same characteristics as an index fossil

  17. Correlation-The matching of rock layers from one area to another.

    Slide 27 - Correlation-The matching of rock layers from one area to another.

  18. Homework # 3

    Slide 31 - Homework # 3