The earliest mammals most resembled living __________.

Name: The earliest mammals most resembled living __________.
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Question

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Monotremes, such as the platypus and echidnas, are the earliest and most primitive group of living mammals. They share many characteristics with extinct mammal ancestors, indicating that they are the closest living relatives to the first mammals that evolved from reptiles. The other options (primates, lizards, and insects) are not closely related to the earliest mammals.

The Earliest Mammals Most Resembled Living __________