Broken out for film from this question
Given that human looking intelligent aliens are so common as to be a trope, what is the earliest depiction in Film of an intelligent alien life form as being non humanoid in appearance (i.e. radically different such as the Horta)?
By non humanoid, I meant that it should be readily distinguishable from the typical two-armed/two-legged alien depiction. For example, all the members of the Max Rebo band would qualify (two arms, two legs, odd heads but still humanoid). Jabba the Hutt would not qualify as humanoid.