If they have, can anyone please tell me in which movie it occurs and the exact scene?
I cannot recall that happening in the movies. Curiously it happened in Legion, Shadow King mentions the word Homo superior. But not in the X-Men movie canon, that I can recall. Maybe there is, though, one mention, but I just don't know.
I remember HomoSapien (?) in X-Men: First class, but I’m not sure about Homo Superior.
Homo Sapiens is the true scientific name of the human species. It has been stated in the movies various times.
It occurs in the comics, that I know. Not sure about the movies
What do you think?