$Homo$ $sapiens$ originated how many years ago?

Which human ancestor first exhibited bipedal locomotion?

Which of the following statements is correct about the origin and evolution of men?

How many teeth did Oligopithecus possess (in $teeth$)?

Evolution of humans appears parallel to the progressive development of brain and language skills. As such, the evolution of individual species, in the sequence of their appearance is:

An arched palate and uniform-sized teeth were found in which of the following ancestors?