To predict: The common characteristics of mammals. Introduction: The Cenozoic era is divided into two periods, namely Tertiary and Quaternary. During this time, mammals became the largest terrestrial animals. Therefore, the Cenozoic era is sometimes called the Age of Mammals.

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Chapter 26.2, Problem 2CS

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To predict: The common characteristics of mammals.

Introduction: The Cenozoic era is divided into two periods, namely Tertiary and Quaternary. During this time, mammals became the largest terrestrial animals. Therefore, the Cenozoic era is sometimes called the Age of Mammals.

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