Revealing mistake: At the beginning when the one monkey falls to its death, it's obviously a stuffed animal posed as a dead monkey.
Greystoke: The Legend of Tarzan, Lord of the Apes (1984)
1 revealing mistake - chronological order
Directed by: Hugh Hudson
Starring: Ian Holm, Andie MacDowell, Christopher Lambert, Ralph Richardson, James Fox
Continuity mistake: When the first flying arrow stabs D'Arnot's butt, it lands diagonally. When the angle changes it's horizontal.
Capitaine Phillippe D'Arnot: This is not the world John. Just the edge of it.
Trivia: Even though the film is entitled "Greystoke: The Legend of Tarzan, Lord of the Apes", the word "Tarzan" is never actually mentioned in the film. The Ape Man is referred to as either "Lord Greystoke" or "John."