The issue is that the ride predated the movie and according to
@articos was designed before the movie as well. Thus the basis for the ride cannot be the movie. It would appear that it could be argued that the movie was based on the ride.
As yet another example, if they stuck stickers of eyes and mouths on the Speedway vehicles tomorrow and called it Cars!, nothing about the ride would be
based on Cars the movie. A tie in, yes. A synergy, yes. But the basis of something is the root, and the roots of Countdown to Extinction predate Dinosaur.
Edit: yet another typo