Cavegirl
A group of sex-crazed cave people are being harassed by a Tyrannosaurus Rex. While they try to figure out a way to deal with this threat, they have sex and eat a lot.
A hot young vixen is kidnapped and raped by a dangerous gang of heroine smugglers, who rape and kill anyone who gets in their way. Then a tough private detective is hired to track down the bastards.
A low rent detective, his stripper girlfriend, a runaway wife (who's joined a whorehouse) and a rapist / obscene phone caller / serial killer all factor into this piece of Los Angeles sleaze.