Geologic Time Vocab Flashcard

Front

Paleozoic Era contains:

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organisms with hard parts

Front

Pangea

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All continents formed together.

Front

Organisms suited to survive and reproduce in an environment.

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natural selection

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Epoch

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next smaller division after period

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Geologic Time Scale

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Division of Earth's history into time units based on types of life forms that lived only during certain periods.

Front

Longest part of Earth's history

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Precambrian

Front

Units of geologic time defined by life forms present

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Periods

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Paleozoic, Mesozoic, Cenozoic.

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Era

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Species that have changed over time

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Organic Evolution

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Era of recent life, began ~65 mya.

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Cenozoic Era