Scraped.. Sabersaurus Rex

A scraped creature idea for my movie. This was even before I came up with this story for the movie. Soo... Yeah.. Anyway this concept is a hybrid between Tyrannosaurus Rex and a Smiladon. It's jaws were not hinged joins but rotating ball socket joints because it's lower jaws were both separate and could open horizontally as well as vertically. It would kill by first driving it's top fangs into a victim's body or neck, and the bottom jaws would repeatedly stab causing massive blood loss. This creature also has heat sensing pits, and four nostril opennings for increased scent sense. The horns are a side effect of the mutation.