WHAT?? Only 12 Cast Members Billed in Film!!!

I cannot believe 20th Century-Fox only had the courtesy to give billing in the movie to a mere twelve players in this two-hour and 20 minute epix!!! I've seen more cast listed in the credits of an 58-minute B picture!! They left out such major cast members as Juan, Mrs. de Vargas, and Doria Marina (Cortez's intrepreter). Of course we can now found out who played those and other unbilled parts thanks to IMDB but what a shame that information comes decades after the deaths of many of these players.