 Ann Miller commented in a TCM interview that at least one take of  her big tap number to "Prehistoric Man" was ruined because of her  own costume. She had been dancing very close to the large  Pithicampetus Erectus dinosaur, and during a series of her  trademark tap spins, the flared skirt she was wearing brushed  against some of the bones and brought the entire erection crashing  to the ground. Filming was halted for a considerable time while it  was put back together.