Reconstructions of prehistoric skulls give us a way to visualize what humans looked like before craniofacial dystrophy, or when there was less of it. Reconstructions aren't perfect, but their flaws will mostly be about stuff like soft tissue and coloring. But they should have the correct general dimensions because they are based on skulls.
Not all reconstructions have facial development this good, especially later reconstructions. But here is a selection of well-developed ancient faces. I link to sources when available which have discussion and may have other angles. Or you can search the web for other angles.
Stonehenge Man (3500 BC):

More info on this reconstruction.
Pictish Man (1400 years ago):

More info.
Bronze Age Farmer (2000 BC):

More info.
Scottish Woman (4200 years ago):

More info.
Adelasius Ebalchus, Switzerland (1300 years ago):

More info.
Swifterbant Man (6000 BC):

Even modern people with good bone structure look recessed compared to these. Great thread