Arcade game geniuses?

There was an arcade game about 9 years ago that i played in the arcade that i thought was awesome. The game was that you were a dinosaur and you fought other dinosaurs and what not till you got to the end of the game which was a chaotic volcano like ending if i remember. I don't remember what the game was called but it was an awesome game. It wasnt dinosaur king or any Juric park game. The closest thing ive found is the game Primal Rage but that isnt it because the game has levels not just set arenas. Help please?