Term
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Definition
| Organism that no longer has lives on earth |
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Term
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Definition
| Remains or traces of organism |
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Term
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Definition
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Term
| 4 types of preserved remains (complete organisms) |
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Definition
Mummification-dried up organism
Amber-encased in plant sap
Tar Beds-encased in tar (petroleum)
Freezing-frozen whole animal |
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Term
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Definition
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Term
| Amber fossils are encased in |
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Definition
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Term
| Tar Bed Fossils are encased in |
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Definition
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Term
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Definition
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Term
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Definition
| minerals replace organic materials over time making a sedimentary rock that looks like the original organic material |
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Term
| Three types of Trace Fossils are |
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Definition
footprints or drag marks
imprints molds or casts
carbon films |
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Term
| Imprints, molds or casts are when |
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Definition
| dead organisms lay on the ground and leave an impression, hollow (mold) or fills in to produce a cast |
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Term
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Definition
1. preserved remains
2. petrification
3. trace fossils |
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Term
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Definition
| fossils used to determine absolute age of a rock layer |
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Term
| To be index fossils they must be |
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Definition
1. widespread around the world
2. Easily identified
3. lived on earth for only a short period of time
4. must be present in large numbers |
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Term
| Two examples of index fossils are |
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Definition
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