Question: What prehistoric animated adventure film did Walt Disney Pictures produce in 2000, led by the editor who worked on Aladdin and Pocahontas?
Context: Tarzan is a 1999 American animated drama adventure film produced by Walt Disney Feature Animation for Walt Disney Pictures.  The 37th Disney animated feature film and the last film produced during the Disney Renaissance era, it is based on the story "Tarzan of the Apes" by Edgar Rice Burroughs, and is the first animated major motion picture version of the "Tarzan" story.  Directed by Chris Buck and Kevin Lima with a screenplay by Tab Murphy, Bob Tzudiker, and Noni White, "Tarzan" features the voices of Tony Goldwyn, Minnie Driver, Glenn Close, and Rosie O'Donnell with Brian Blessed, Lance Henriksen, Wayne Knight, and Nigel Hawthorne. Disney's Animated Storybook: Pocahontas is the third entry in the "Disney's Animated Storybook" point-and-click adventure interactive storybook game series, based on theatrical and home video releases.  This game was based on the 1995 Walt Disney Animation Studios film "Pocahontas", which told a fictionalised account of the relationship between Native American Pocahontas and Englishman John Smith in the midst of the european colonization of the Americas.  The game was developed by Media Station and published by Disney Interactive.  It was released in December 1995. Dinosaur is a 2000 American CGI animated adventure film produced by Walt Disney Feature Animation and The Secret Lab and released by Walt Disney Pictures.  It is the 39th Disney animated feature film and Disney's The Secret Lab computer animated feature, though it is not officially labeled as one of the animated classics in the United Kingdom, where "The Wild" (2006) is included in the canon instead. Aladdin is a 1992 American animated comedy musical romantic fantasy adventure film produced by Walt Disney Feature Animation for Walt Disney Pictures.  The film is the 31st Disney animated feature film, and was the fourth produced during the Disney film era known as the Disney Renaissance.  It was directed by John Musker and Ron Clements, and is based on the Arab-style folktale of the same name from "One Thousand and One Nights" and the French interpretation by Antoine Galland.  The voice cast features Scott Weinger, Robin Williams, Linda Larkin, Jonathan Freeman, Frank Welker, Gilbert Gottfried and Douglas Seale.  The film follows Aladdin, a street urchin, who finds a magic lamp containing a genie.  In order to hide the lamp from the Grand vizier, he disguises himself as a wealthy prince, and tries to impress the Sultan and his daughter. Walt Disney Pictures, Inc. is an American film production company and a subsidiary of Walt Disney Studios, owned by The Walt Disney Company.  The division is based at the Walt Disney Studios in Burbank, California, and is the main producer of live-action feature films within the Walt Disney Studios unit.  It took on its current name in 1983.  Today, in conjunction with the other units of Walt Disney Studios, Walt Disney Pictures is classified as one of Hollywood's "Big Six" film studios.  Films produced by Walt Disney Animation Studios and Pixar Animation Studios are also released under this brand. Pocahontas is a 1995 American animated musical romantic-comedy-drama film produced by Walt Disney Feature Animation for Walt Disney Pictures.  The 33rd Disney animated feature film, the film is part of the era known as the Disney Renaissance which lasted from 1989 to 1999.  Directed by Mike Gabriel and Eric Goldberg, the film is inspired by the known history and folklore surrounding the Native American woman Pocahontas and portrays a fictionalized account of her historical encounter with Englishman John Smith and the Jamestown settlers that arrived from the Virginia Company.  The voice cast features Irene Bedard, Mel Gibson, David Ogden Stiers, Russell Means, Christian Bale, Billy Connolly, and Linda Hunt.  The musical score was written by Alan Menken, with songs written by Menken and lyricist Stephen Schwartz. H. Lee Peterson is a veteran animation editor.  His credits for Walt Disney Pictures include being an assistant editor for "The Little Mermaid", and the lead film editor for "Aladdin", "Pocahontas", "Dinosaur", "Home on the Range" and the short film "The Prince and the Pauper; starring Mickey Mouse". In the history of The Walt Disney Company, the Disney Renaissance refers to the era from 1989 to 1999 during which Walt Disney Feature Animation (renamed Walt Disney Animation Studios in 2006) experienced a creative resurgence in producing successful animated films based on well-known stories, which restored public and critical interest in The Walt Disney Company as a whole.  During this era, the studio produced and released ten animated films: "The Little Mermaid" (1989), "The Rescuers Down Under" (1990), "Beauty and the Beast" (1991), "Aladdin" (1992), "The Lion King" (1994), "Pocahontas" (1995), "The Hunchback of Notre Dame" (1996), "Hercules" (1997), "Mulan" (1998) and "Tarzan" (1999). Peter Pan is a 1953 American animated adventure film produced by Walt Disney and based on the play "Peter Pan, or The Boy Who Wouldn't Grow Up" by J. M. Barrie.  It is the 14th Disney animated feature film and was originally released on February 5, 1953, by RKO Radio Pictures.  "Peter Pan" is the final Disney animated feature released through RKO before Walt Disney's founding of his own distribution company, Buena Vista Distribution, later in 1953 after the film was released.  "Peter Pan" is also the final Disney film in which all nine members of Disney's Nine Old Men worked together as directing animators.  It is also the second Disney animated film starring Kathryn Beaumont, Heather Angel, and Bill Thompson after their roles in the animated feature "Alice in Wonderland". Piglet's Big Movie is a 2003 American animated musical comedy-drama adventure film produced by Walt Disney Feature Animation and animated by Walt Disney Animation (Japan).  It was released by Walt Disney Pictures on March 21, 2003.  The film is based upon the characters in the "Winnie-the-Pooh" books written by A. A. Milne.  It is the second in a recent series of theatrically released "Winnie the Pooh" films, preceded by "The Tigger Movie" (2000) and followed by "Pooh's Heffalump Movie" (2005).  In the film, Piglet is ashamed of being small and wanders off into the Hundred Acre Woods, leading his friends to form a search party to find him.
Answer: Dinosaur