Planeta Burg

Planeta Burg (aka Planeta Bur) was a 1961 sci fi film from the Soviet Union. It was based upon a novel by Stanislaw Lem, who also wrote Solaris, later made into a film by Andrei Tarkovsky.
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Here is the film, unsubtitled:

Roger Corman later added some scenes with Basil Rathbone and Faith Domergue, in 1965, and retitled it Voyage To The Prehistoric Planet. There are scenes within, such as the death of John the robot, that are moving, as well as some scenes with a giant Venus Flytrap-like creature, and odd dinosaur-like carnivores that are really scary, like the Boogeymen in Babes in Toyland, because they are so fake they are realer than great special effects.

Here is that version of the film:

In 1968, Corman let then director, now full time cineaste, Peter Bogdanovich, further mutilate the film into Voyage To The Planet Of Prehistoric Women. Mamie Van Doren and a few other scantily clad babes were thrown into the 1965 version (bye-bye Basil and Faith!), for television showings, and....well, it still is a better than expected film, even witht hat title.

Here is the Bogdanovich version. Note the very tv commercial-like start to this version: