That's the essence of evolution.
Unless you mean that evolution means selection for type? I've been given lots of vocabulary by evos in the attempt to bridge all these uncomfortable, contingent gaps between the species..Evos make so many assumptions--round faces do not new species create.
No, it isn't.
There was an article posted here, I think, just a couple of weeks ago, that purported that the most significant cause of differences in female face size is level of estrogen and testosterone.
In females with smaller faces, supposedly larger stores of estrogen caused the browbone and jaw to stop growing fairly early on. With women who had decreased amounts of estrogen or increased amounts of testosterone, the opposite was true.
So, maybe girls with small faces are more fertile too?