You can play as a dinosaur in Primal Carnage, and they're planning some kind of co-op vs AI mode for PC: Extinction.
Saurian looks very interesting, and is something I've been wanting to see for a long time - a thorough simulation of a dinosaur ecosystem (Hell Creek formation). There's a thread on these boards somewhere.
I think what's missing is a really good park sim. Operation Genesis was great, but is very old now, and even back in the day it was crying out for a more polished sequel with deeper gameplay. JP Park Builder is the closest we have today and it's a piece of shit mobile game.