Asked by Birajit Nepal on Jun 03, 2024

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When did the first mammals appear?​

A) ​about 40 million years ago
B) ​approximately 65 million years ago
C) ​over 500 million years ago
D) ​over 200 million years ago

First Mammals

Early ancestors in the mammal lineage that appeared during the Mesozoic era, showcasing traits distinct from their reptilian forebears.

  • Understand the influence of continental drift and climatic alterations on the evolution of species.
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ZK
Zybrea KnightJun 05, 2024
Final Answer :
D
Explanation :
The first mammals appeared over 200 million years ago during the Mesozoic Era, which is also known as the Age of Reptiles.