First mammals appeared in the period
Triassic
Jurassic
Cretaceous
Tertiary
It's Obvious
Did aquatic life forms get fossilised ? If, yes where do we come across such fossils ?
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
The flowering plants originated in which of the following periods?
The existence of marsupials in Australia and New Zealand prove
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