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30 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Fossil |
Remain or impressions of dead organisms
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Organism |
Living things // plant & animals |
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Cast fossil |
preserves the impression of the hard parts of an organism
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Mold fossil |
Organism dies and is covered with sediments and a cavity is left |
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Trace fossil |
footprints, tracks, burrows, borings, and feces left behind by animals
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Persevered fossil |
prehistoric organism that have been preserved inside rock
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Carbonated fossil |
fossil found in any rock when organic material is compressed |
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Fossil record |
total number of fossils that have been discovered |
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Diversity |
range of different things |
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Relative age |
a close guess on how old something is |
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absolute age |
the exact age of something |
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index fossils |
fossil that can give you an accurate index on age |
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laws of superposition |
the youngest layer is on top and the oldest on bottoms |
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trilobites |
an example of an index fossil |
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petrified fossil |
replacement of original material and filling of original with minerals. |
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Geological time scale |
All of earths time |
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Period |
2nd shortest measure of time |
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Epoch |
Shortest measure of time |
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Precambrian |
First super eno |
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Paleozoic era |
Era of triblobites |
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Mesozoic era |
Era of dinosaurs |
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Cenozoic era |
Era where in now |
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Quaternary period |
most recent 2.6 million years
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Holocene epoch |
current geological epoch
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Natural selection |
Survival of this fitness |
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Adaptation |
Evolve to better suit environment |
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Variation |
Difference |
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Population |
One type of organism |
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Species |
A specific type of organism |
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Era |
Longest period of time |
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