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5 Cards in this Set
- Front
- Back
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fossil |
The remains or traces of past life, found in sedimentary rock |
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mold |
The hollow space that is left when sediment hardens around the remains of an organism and the remains then dissolve |
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cast |
A fossil formed when dissolved minerals fill a mold and harden |
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index fossil |
A fossil of an organism that lived in many places around the world for a short period of time; it can help scientists find the age of a rock layer |
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paleontology |
The study of fossils |
