Since Alamosaurus is cut from the game, it's possible to see it again, if they add the Ojo Alamo Formation. Here are the dinosaurs/animals: Tyrannosaurus rex Alamosaurus Ojoceratops Torosaurus Edmonotosaurus Kritosaurus.
Interesting. Although I doubt they will ever make it for this Saurian game. Plus you missed many more dinosaurs from this formation:
Ojoraptorsaurus (a relative of Anzu) Glyptodontopelta (a relative of Denversaurus) Eotriceratops (a larger relative of Triceratops) Quetzalcoatlus (not a dinosaur, but it's very emblematic, plus is one of the big ones)
There are also plenty of more additional described and undescribed fauna, and they could easily add this formation has a bonus formation over the Two Medicine Formation, which would require a lot of more work, as many fauna from the latter formation is substantially different from the Hell Creek Formation. The Ojo Alamo would, theoretically, retain most of the Hell Creek fauna, while some others were replaced by different ones, adding just Alamosaurus, Torosaurus, etc.