What Is the Geologic Time Scale?

Students will use their knowledge of Earth science to answer questions about the geologic time scale. This science printable challenges students to identify the era (Cenozoic, Mesozoic, Paleozoic, or Precambrian) in which each organism listed in the table first appeared on Earth.
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Excerpted from

Concepts and Challenges of Earth Science
From Pearson's Concepts and Challenges Earth Science.




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