First mammals appeared in the period
Triassic
Jurassic
Cretaceous
Tertiary
It's Obvious
Dinosaurs became extinct in
The first mammals were like …$A$… Their fossils are small sized. Mammals were …$B$… and protected their unborn young inside the mother's body
Choose the correct option for $A$ and $B$ to complete the given $NCERT$ statement
Which era is called the age of angiosperms?
Describe the evolutionary history of plant and vertebrates through geological period.
