Ten years ago, WDI imagineers envisioned a roller coaster for Dinoland USA in Animal Kingdom. This would have been MUCH better than the actual one, as audio animatronics dinosaurs, including the big " Carnosaurus" AA would have been part of the ride. For unknown reasons, they did a different choice, but you can see the beautiful renderings at the end of this article:
Disney and more: A Tribute to Tom Thordarson - a.k.a " THOR " - Artwork - Part Two : Dinosaurs Ride Concepts
Note that the first renderings shown in the article was another incredible concept of a dinosaurs flume ride developped for Landmark Entertainment, unfortunately never built, too.