This had a knock on effect for the studio's first big movie in the 2010s, when Tangled was to be promoted as Disney's 50th classic. It's not like it was different in every other territory though.
There is speculation that they didn't want this 2000 computer animated movie (the first for the Walt Disney Animation Studios) to confuse audiences with Pixar's output while also not taking away from the two other traditionally animated movies that year in the classics line - Fantasia 2000 and The Emperor's New Groove. Over here it is omitted entirely, which is rather bizarre. Everywhere else in the world it is officially Disney's 39th animated classic. Disney's Dinosaur has a bit controversial history for UK Disneyphiles.
