Chapter 17—Geologic Timeline Review Vocabulary eons land bridge eras geographic isolation periods ice age epochs mass extinction
Explain the theories of mass extinction-gradual and quick Explain the Cambrian explosion and why it was so important Explain how the geologic timeline was developed Paleozoic Era --Name each of the three ages --Describe the animals and climate of each stage Mesozoic Era --What was the dominant geological event? --What was the cause of the Mesozoic mass extinction? Cenozoic Era --When did humans live? --Why did mega mammals go extinct? --Why was this called the Age of Mammals (why did they thrive)?