Generically, humans do tend to have the same appearance features, but there’s variety at the level of specifics, especially when considering geographic location. For example, Subsaharan Africans, East Asians, and Western Europeans share a lot of facial features, but there is also notable differences as well. The same holds for people in the past. In that regard, these things give us a better grasp of specific features that were commonly exhibited in a given place and in a given time frame