[Beckwith]

Some cave drawings?

I don't think you'll find any cro magnons with bows and arrows -- it's a relatively recent weapon. Early man primarily used spears to hunt.

The conversion of the spear into the javelin, as it was the most obvious, so probably it was the earliest step in advance. Close upon this followed the sling, and last the arrow and the bow. The invention of the latter weapon is ascribed by Pliny, to a son of Jupiter.

In the days of Homer it was the weapon of the gods; and thousands of years after, it was the pride and glory of the English yeoman.

The bow does not appear to have been extensively used in later times in either the Greek or Roman armies. The ferocious Spartan preferred the close combat with manual weapons, the Athenian won his glory upon the sea, and it was with the pike that Alexander overcame the hosts of Persia.

http://www.researchpress.co.uk/firearms/history/armsinvention.htm

[Lurker]

The bow does not appear to have been extensively used in later times in either the Greek or Roman armies.

You might want to look into the history of the ballista.

L