Most authors refer to these cultures as Aurignacian Gravettian Solutrean and Magdalenian The reason is that most authors are concerned with single finds or stratigraphy Cro Magnons are neither From what I can see those authors that do look at the people and or the ethnic composition of palaeolithic Europe often use Cro Magnon caveat I m not an archaeologist I may not have the full overview of the field As for how common the term is I have answered that with some searches in google schoolar above I believe that question is only relevant for a discussion of whether we should have an article on Cro Magnons at all