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14 Cards in this Set
- Front
- Back
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The largest division on the geologic time scale? |
Eras |
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Which part of geologic time lasted the longest |
Precambrian |
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How are the units of geologic time divided |
Eras , Period , Epochs |
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Which Era began with early invertebrate progressed to reptiles and ended in mass extinction? |
Paleozoic |
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What is the Mesozoic Era known for |
Dinosaurs |
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During what did mammals and birds first appear |
Mesozoic |
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During which Era did trilobites live |
Paleozoic |
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What did the first period of geologic time |
Cambrian |
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What time period did mammals appear |
Mesozoic |
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Changes climates have caused what during earth'shistory |
Glacieration , ice age |
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What possibly caused the extinction of dinosaurs |
Asteroid |
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This division of geologic time gad tropical climates and warm shallow seas |
Paleozoic |
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In what part of geologic time do humans live |
Cenozoic |
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Geologic time is divided into units base on types of |
Organisms |
