Homo erectus lived about

Which organism's skull is shown in the figure?

When did Dryopithecus and Ramapithecus exist?

Primates which existed about $15$ million years ago were:
$(I)$ Dryopithecus
$(II)$ Homo habilis
$(III)$ Ramapithecus
$(IV)$ Australopithecus
$(V)$ Homo erectus
$(VI)$ Neanderthal man
Choose the correct option.

According to the geological time scale,during which period did Dryopithecus evolve?

The sub-order $Prosimii$ includes . . . . . . .