If you're in the US, it's $20.
IIRC, there are more dinosaurs in Turok 2 than the first. Someone can correct me if I'm mistaken. I just finished the 3rd level of the first game and I've mainly been fighting dudes with guns and melee stuff. Only dinos so far have been raptors.
Pretty sure I remember one of these games letting you ride around on a triceratops with guns mounted on it, but I don't remember which one. It has been a long time.
Edit: others above have it covered.
Turok 1 has more "classic" dinos (some with syfy upgrades) than Turok 2. T2 goes for more evolved Dino/lizard/man hybrids with a few classic dinos here and there.
I played thru both a few years back on Xbox One and, gameplay wise, I was surprised that I enjoyed T1 better. Both great & fun but, in sort of a Banjo Kazooie to Tootie way, T2 can be a bit too big for its britches. HUGE levels with various collectibles that you must find, tho the option to highlight collectibles helps.
I'd say get both but, if only one, don't overlook the first Turok.
Thanks to all of you for your input.
I think I will go for T2 first, because after playing through doom 1&2 back to back, I am a biiit burned out by the classic mid-90s fps design.
I will get T1 eventually to be sure, that seems to scratch the dino-itch a bit more.