Best dinosaur game?

None of them and play DinoPark Tycoon instead.

Dino Crisis 1 & 2 They are old, but they are great.

Turok

So, none of the present ones are great?

They actually all suck for the exception of Primal Carnage and the dinosaur mutator mod for Unreal Tournament III.

thestompingland.com

Looks promising.

The Lost World: Jurassic Park on SEGA Genesis

Jurassic Park Operation Genesis.

Orion: Dino Horde is good, especially Conquest mode

http://www.youtube.com/watch?v=e1osScSZ5gE

I liked turok

whats the new one where you hunt dinosaurs for food?

Dino Crisis

Dino Crisis 1 & 2 ftw old but gold

Everyone has Dino D-Day from bundles, but hardle anyone plays it. It's a decent game, you should check it out.
(Source engine FPS)

Go Home Dinosaurs!

Check out Trespasser. That game was amazing at the time, and still has very interesting Dino AI behaviors. The wonky hand control is a ton of fun too because its so retarded... it also has some rudimentary physics. It was one of the first on PC with so much of it.

The Lost World on Sega Saturn/PS1

Dino D-Day is actually ridiculously entertaining.

Orion is fun with friends

Jurassic Park: The Game

Jurassic Park for Sega CD. Thought this game was so amazing as a child...

Tomb Raider, obviously xD

Primal Carnage :D

Carnivores 2 is a great dinosaur hunting game.

Carnivores... not on Steam tough... but I think it's Greenlight pending.

The Land Before Time