Related Clues:

• Monkeys' uncles
• People preceders
• 'Planet of the ___'
• Simians
• King Kong's kin
• Subjects of Darwinian theory
• Steps in human evolution
• Earth rulers in a 1968 film
• Extras in the opening of '2001: A Space Odyssey'
• Monkeys' uncles?
• Scoffs at
• Bronx Zoo houseful
• Siamangs, e.g.
• Gorillas and chimps
• Scorns