Original: A 3.2 million year-old, 40% complete fossil skeleton of an Australopithecus afarensis specimen discovered in 1974 was named "Lucy" because The Beatles' song was being played loudly and repeatedly on a tape recorder in the camp.
Simplified: A 3.2 million year-old, 40% complete fossil skeleton of an Australopithecus afarensis specimen discovered in 1974 was named "Lucy" because the Beatles song was being played loudly and repeatedly on a tape recorder in the camp.