Fossils

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Fossils
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Sedimentary Rocks


Shale
Conglomerate

Sandstone

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Fossils
The remains or imprints of living things of the
past found in Sedimentary rocks.
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Fossils provide information about life and
conditions in the past.
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Fossils of Sea Creatures
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Fossils of Plants

• Plant fossils can tell us about the ancient
  environment

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Animal Fossils

• Animal fossils can tell us
• About past environments
• What the animal ate
• How they lived

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Types of Fossils

• Petrified Minerals have filled in where an
  organisms once was
• Molds A hollow area that an organism has left.
  
• Cast A copy of the shape of the organism
  (opposite of a mold)
• Carbon Film a thin coating of carbon that is
  left behind when gases have been release by the
  decaying fossil (like a leaf print on a rock)
• Trace An imprint that an organism left behind
  (like a footprint)

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How old is it?

• Relative Age Its age when compared to others (
  I am older than you)
• Absolute age Its actual or real age
• We use radioactive dating to find this
• Unconformity a gap in the the geological record
  (like from erosion)