When Fred first arrives home from the quarry and sits in his recliner, he picks up a newspaper while talking to Wilma. The headline on the paper says "Pterodactyl Crashes into Andes, Eats Rugby Team to Survive". This is a reference to Uurguayan Air Force Flight 71 that crashed into the Andes mountains on October 13, 1972 while flying a rugby team to a match. They were trapped on the mountain for 72 days, during which time some of the survivors were forced to eat the remains of some of their deceased comrades in order to survive.
Though other actors were considered, there really was nobody else in the running for the role of Fred Flintstone. Steven Spielberg had worked with John Goodman before and had already noticed the actors striking resemblance to Fred Flintstone. He actually told Goodman then and there that he (Goodman) was 'going to play Fred' for him.
The "Bowling Alley" sequence was almost not in the movie. It was added at the last moment, because Fred's "Twinkle Toes" bowling style was such a big part of the series, they felt they couldn't leave it out.
On Elizabeth Taylor's first day onset, she was greeted with 30 bouquets of flowers, a Cartier watch, a prehistoric bowling ball with her name engraved on it and a bottle of her Passion perfume redesigned Bedrock-style.
At the drive in sequence, a Bedrock version of the Universal (Univer-shell) Logo is seen, complete with the main letters spelled out in bones, the older Universal/MCA Television theme music, and the continents on the globe placed together in to the prehistoric continent of Pangaea.
The appearance of the saber-tooth at the end of the movie marks one of the first - if not _the_ first - time for a furry CG character in a feature film. A specific, complex algorithm (for its time) had to be developed to calculate the movement of every single hair of the fur.
Harvey Korman, who played the "Dictabird" in this film, voiced the "Great Gazoo" in the original Flintstones cartoon. He was also one of the contract actors who would supply voices for other parts necessary for the episode.
When Elizabeth Taylor was on the set, two jokes were played. When her character is at a makeup table, a stone perfume bottle is engraved "White Diamonds" which is the name of Taylor's perfume line. Another was when her character was tied up, Taylor playfully looked at the director and asked, Did he know how many men "wanted [her] in that position?".
The Jim Henson Creature Shop only had 12 weeks to create and deliver more than 20 creatures for this production. Project Supervisor Verner Gresty concentrated on creating the 6000 pound brontosaurus used in the opening sequence. Other creatures included a pair of giant lobster lawnmowers designed and built by Chris Fitzgeraldand Jamie Jackson-Moore and the Dictabird built by Jez Harris and Richard Gregory.
The song playing on Fred's radio at the start of the film is the original recording of "The Bedrock Twitch" from the original TV series. Later in the film, the "BC-52s" perform a modernized version of the song. The version they recorded for the soundtrack CD, however, is a different arrangement than the one performed in the movie.
According to industry estimates, this project hired a record amount of writers to work on a single movie script during the course of many years. The number is reportedly 35 different screenwriters, however only three are credited with writing it.
No fewer than 35 writers worked on the film. Steven E. de Souza turned in the original draft in 1987, though Michael Wilson's 1992 draft later became the working model. When director Brian Levant signed on, he recruited Gary Ross to handle the screenplay; Ross turned in his draft in 1993. This was junked. Various other writers, including Lowell Ganz and Babaloo Mandel, worked on the script before Levant was finally happy in August 1993. Though just three writers ended up being credited, a total of 32 people (including Levant and producer Bruce Cohen) were awarded the film's Golden Raspberry for Worst Screenplay.
When Fred flies into his car at the beginning of the movie, after sliding off the Bronto-crane, John Goodman was actually lifted by a crane out of the car and the footage was just shown in reverse. This actually explains why the roof of Fred's car appears shorter during this scene, than it does for the rest of the movie. As a shorter roof would be necessary to shoot such a scene.
When Joel Silver was originally attached to the film as producer, he always had James Belushi in mind to play Fred Flintstone. When Silver left the project, he gave Belushi a silver Mercedes as payment.
The restaurant in which Barney is working as a busboy is called The Cavern on the Green, a reference to The Tavern on the Green in Manhattan's Central Park. The Tavern on the Green is where Louis Tully, also played by Rick Moranis, is attacked and possessed by the Terror Dog form of Vinz Clortho (The Keymaster) in Ghostbusters (1984).