I think the adventure genre fits Jurassic Park better than any other videogame genre. It really has all the hallmarks. You've got an isolated location, tons of locked doors and fences that need keys or power rebooted or whatnot, potential danger around every corner. The characters are often lost and have to find their way to safety. There's usually a complex abandoned structure to be explored. It really has a great setup for a great adventure game.
And it's a wonderful opportunity for Telltale because it gives them a chance to tell a story that is more realistic and doesn't hinge on completely absurd situations and characters (and yes, I realize how strange it is to say that about a story with dinosaurs in it).
I know Telltale has said this won't be a "point and click dinosaur game" but I hope they don't stray too far from the adventure game genre just because they think people want a Jurassic Park game that is more about shooting dinosaurs. There's a lot of adventure potential there.