Guys, there aren't going to be dinosaurs because Ubisoft Editorial decreed around five years ago that all their major ~$15+ million dollar projects should drop all fantasy and any heavy sci-fi themes (like, beyond the extent of what you see in Tom Clancy or Assassin's Creed where it's generally modern day).
If you look at Assassin's Creed, Watch_Dogs, Tom Clancy, or even things like For Honor, they all follow this.
This is Osiris. It was canned because it was about fighting mythical creatures and gods and that's a no-no for a big budget at Ubisoft.