MCQ
First mammals appeared in the period:
- ✓Triassic
- BJurassic
- CCretaceous
- DTertiary
✓
Answer
Correct option: A.
Triassic
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.
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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