Using the great 2005 Farkas paper on skull measurements I threw together a littl user guide on how to distinguish certain ethnic groups from their close neighbors. These are the major anatomical landmarks and you can read the paper here: http://femininebeauty.info/farkas.pdf 

I’ll start with Slovaks as an excuse to show a picture of a pretty woman. Slovaks sharply differ from their neighbors (Czechs, Slovenians, Hungarians, Poles) in the
width of the lower face (go-go), which measures 3.7 standard deviations above the white US average.

Slovaks are oddly different in their neighbors in this respect (Czechs look pretty much like US whites), but the North Italian sample actually registered a higher score. Behold the power of this man’s chin:

Widely spaced cheekbones (zygomatic distance) are an East Asian trait, but bizarrely Azeris have the highest values of this trait ever recorded.

The Sarakatsani are a Greek people with a pastoralist lifestyle they picked up from the Vlachs. They too have a very high zygomatic, distance, which is extremely anomalous because typical Greeks have some of the lowest values in the world. Some of them look Asian-ish:

Croatians can be distinguish from other Europeans by their microscopic foreheads, about 2 sds lower than the US average. Some might wonder whether having an empty space where the frontal lobe should be might be related to the fact that they seem to like killing people for fun.

The tiniest foreheads in the whole sample though, belong to the Persians. Think for a second about how amazing it is that in a country marked by small heads Khomeini had a the skull of James Bond supervillain: