Back in 2005, William Monahan and John Sayles wrote a script for Jurassic Park 4 in which a secret genetics lab has been cross-breeding humans with dinosaurs. The result is an army of grotesque and intelligent humanoid dino freaks with problem-solving intelligence and the ability to fire automatic weapons. Yeah. Their storyline was scrapped but it apparently got much farther along in production than anyone realized.
Here is the original script.