Littlefoot and his friends help out the now-intellegent dinosaurs (who are related to some of Littlefoot's friends) from Prehistoric times and with the help of Ash, SpongeBob, Stan, Genie, Zazu, and their friends. They will help the dinosaurs find Dr. Bleeb, and to avoid the villianous Professor Screweyes, whom Plankton, Jafar, Iago, Shenzi, Banzai, Ed, and Team Rocket (Jessie, James, and Meowth) are working for.
- Ash Ketchum, Pikachu, Misty, Brock, Togepi, SpongeBob SquarePants,Patrick Star, Squidward Tentacles, Sandy Cheeks, Eugene Krabs, Stan Marsh, Kyle Broflovski, Eric Cartman, Kenny McCormick, Genie, Zazu, Sheldon J. Plankton, Jafar, Iago,Shenzi, Banzai, Ed, and Team Rocket (Jessie, James, and Meowth) guest star in this film.
- Guido joins Littlefoot and his friends in this film.
- This is the first Land Before Time crossover film guest starring Ash and his friends and Team Rocket.
- This is the first Land Before Time crossover film to feature a Disney character as a guest star (Genie and Zazu team up Littlefoot and the gang while Jafar, Iago, Shenzi, Banzai, and Ed team up with Professor Screweyes).
- Rex, Elsa, Woog, and Dweeb are revealed to be relatives of Chomper, Petrie, Cera, Ducky, and Spike (since he's Ducky's adopted brother). Rex is revealed to be Chomper's uncle, Elsa is revealed to be Petrie's aunt, Woog is revealed to be Cera's uncle, and Dweeb is revealed to be Ducky and Spike's uncle.
- Unlike LionKingRulezAgain1's film Simba, Timon, and Pumbaa's Adventures of We're Back! A Dinosaur's Story, this is an NTSC film (taken from an HDNet Movies airing of the film) with NTSC bits from The Land Before Time films, the Pokémon films, The SpongeBob SquarePants Movie, South Park: Bigger, Longer & Uncut, the Aladdin films, The Lion King films, and Mickey's House of Villains.
- This film is requested by RatiganRules.
- Genie is the only member of the Jungle Adventure Crew in this film while King Julien, Maurice, and Mort were with Simba, Nala, Timon, and Pumbaa in Simba, Timon, and Pumbaa's Adventures of We're Back! A Dinosaur's Story, King Louie will be in Bloom's Adventures of We're Back! A Dinosaur's Story, and Terk,Tantor, Louis, Sebastian, Fu Dog, Rutt and Tuke, and Roger Rabbit will be in Spyro and Friends Say We're Back! A Dinosaur's Story.
- Zazu is the only member of DisneyDaniel93's Pooh's Adventures films in this film while The Vultures andJiminy Cricket will be in Spyro and Friends Say We're Back! A Dinosaur's Story.
- Both The Land Before Time and We're Back! A Dinosaur's Story were produced by Universal Pictures and Amblin Entertainment.
- Littlefoot and his friends will see SpongeBob, Stan, Genie, and their friends again in Littlefoot's Adventures of Ghostbusters.
- Littlefoot and his friends will see Ash and his friends again in Littlefoot's Adventures of Pokémon: The Movie 2000.
- Littlefoot, SpongeBob, Stan, Genie, Zazu, and their friends will see Rex, Woog, Elsa, and Dweeb again inLittlefoot's Adventures of Sleeping Beauty.
- Ash and his friends will see Rex, Woog, Elsa, and Dweeb again with Elvis (half-brother of Jesse Greenwood) in Littlefoot's Adventures of Free Willy 2: The Adventure Home.