First mammals appeared in the period: - Vidyadip

MCQ

First mammals appeared in the period:

A
Triassic
B
Jurassic
C
Cretaceous
D
Tertiary

✓

Answer

Triassic

Explanation:

Triassic period, in geologic time, the first period of the Mesozoic era. It began 252 million years ago.

Reptiles increased in diversity and number, and the first dinosaurs appeared during this period along with the appearance of first mammals.

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