Ed Wood's ONE MILLION AC/DC (Circumcised Cut)

A clan of cavepeople are harassed by a Tyrannosaurus Rex.

Written by Ed Wood under the pseudonym Akdon Telmig, and directed by Ed De Priest.

This is the Circumcised Cut (i.e. - all of the naughty stuff has been removed so the movie can be watched by all).

Originally released in 1969.