"Lost Continent" and "Superman On Earth"

Sharp-eyed viewers (particularly Adventures of Superman fans) could easily find familiar footage from this trailer for Lost Continent (1951) by Lippert Pictures..

Some scenes were lifted from the movie and used for the destruction of Krypton scenes in the 1951 Adventures of Superman episode, "Superman On Earth".  

If one views the complete movie, the rocket footage at the beginning was also used in "Superman On Earth" for Kal-El's rocket.

For your viewing pleasure, here's the complete movie:

It is interesting that Lost Continent and "Superman On Earth" were produced in the same year (1951).