Biology
NULL
Medium
Question
Mammals became dominant in __________?
A
Proterozoic era
B
Mesozoic era
C
Paleozoic era
D
Cenozoic era
✓ Official correct answer
Community credibility
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A
Proterozoic era
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B
Mesozoic era
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C
Paleozoic era
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D
Cenozoic era
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Explanation
Mammals became the dominant group of large land animals during the Cenozoic era, following the extinction of the non-avian dinosaurs at the end of the Mesozoic era.