Seriously, look at those flat rock formations: that’s all undisturbed sedimentary rocks that have accumulated over a vast amount of geologic time. Of course there are fossils in there! (Bonus points if you can spot the cirques; here’s more geological background.)
Here’s a bit more about the dinosaurs. To show how far out in the wilderness this geopark is, note the hope expressed that they won’t need much helicopter support:
Unfortunately the museum at Tumbler Ridge is closed at the moment because of some sort of funding issue, so here is a video someone posted of it. I’ve read somewhere that this place has the only known tyrannosaurid walkways!