Jurassic final destruction

In the late jurassic, North America a pair of ceratosaurus is searching for a prey. They have enter on the territory of the the alosaurus PALEONTHOLOGIST: Allosaurus is bigger, stronger, and more inteligent that ceratosaurus, only oportunity that ceratosaurus has is to use his agility to surprice allosaurus.
Allosaurus kill the female by bitting her neck. Now allosaurus attacks the male, who acts fast and bite the allosaurus using his agility. Now the fight is personal. Allosaurus pushes the ceratosaurus and than kills him.
PALEONTHOLOGIST: For 20 years after that allosaurus continue killing ceratosaurus and the nature laws chabge, and the hunter becomes hunted.