This planet was named after the constellation Taurus. (Star Trek Encyclopedia 2nd ed., p. 499) In fact, due to "Taurus" already being the name of a constellation when "The Galileo Seven" was written, Kellam de Forest suggested instead renaming this planet "Eta Tauri II" (in a series of research notes, dated 8 September1966).
In the script of "The Galileo Seven", the surface of Taurus II was described as featuring "a sort of a crater, with overhanging rock walls jutting up against a dull featureless sky. The sky is a particularly bilious shade of green. Only a few scrubby plants are seen. It is a most unprepossessing sight." The script's stage directions also established that some areas on the planet's surface were to be misty.