In which era did the Himalayas and Alpe emerge

In which era did the Himalayas and Alps emerge (a) Beginning of coenzoic (b) Middle palaeozoic (c) Early palaeozoic (d) Late palaeozoic

In which era the fossils are scanty

In which era, did life originate?

In which era the fossils are scanty.

In which era life originated?

Division Of The Himalayas

In which era reptiles were dominant ?