Don't You Mean Extinct?

After Sam and Dean Winchester accept John Hammond's request to spend a weekend on his island, nothing goes according to plan. Two no-shows and one sick triceratops... oh, and did I mention the man-eating creatures that are now roaming freely about the island? What about the two annoying kids and the blood-sucking lawyer?
This is a Supernatural/Jurassic Park crossover. Sam and Dean take the place of Ellie and Alan, while Castiel takes the place of Ian. The rest of the characters are the same, aside from Lex and Tim. They're replaced by two of my OCs. I'm making some things different from the movie so everything isn't so predictable.