Fossils What are fossils?

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A Trip Through Geologic Time

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Presentation transcript:

Fossils What are fossils? Formed when living things die and are buried by sediment. The sediment hardens and preserves the shape of the organism. Generally only hard parts of an organism are preserved. The soft parts rot and/or are eaten Bones, shells, teeth, seeds and woody stems are often preserved as fossils

What are the kinds of Fossils? FOLDABLE Molds and casts Petrified fossils Carbon films Trace fossils Preserved remains

What do Fossils Show? Past Environments How species (Organisms) have changed over time Show evidence for Evolution