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The first mammals evolved during the _____ Period. Quaternary Cambrian Permian Triassic
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2 votes
The first mammals evolved during the _____ Period.

Quaternary
Cambrian
Permian
Triassic

User Ivan Zamylin
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2 Answers

4 votes
they were during Triassic period
User New Co
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7.3k points
5 votes
The first mamals evolved even before the dinosours during the Triassic period
User Olsavage
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6.7k points
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