Table 1. Abbreviations and related descriptions of selected landmarks and distance-based traits.

Landmarks		Distance Phenotypes
Abbreviations	Description	Abbreviations	Description
g	Glabella	sn - gn	Height of lower face
n	Nasion	g - sn	Height of middle face
prn	Pronasale	n - sn	Nose Height
sn	Subnasale	sn - prn	Nasal protrusion
gn	Gnathion	alL - alR	Nose width
alL	Alare (L)	exL - exR	Intercanthal width
alR	Alare (R)	enL - enR	Biocular width
exL	Exocanthion (L)	zyL - zyR	Zygomatic width
exR	Exocanthion (R)	goL - goR	Mandible width
enL	Endocanthion (L)	chL - chR	Mouth width
enR	Endocantion (R)
zyL	Zygion (L)
zyR	Zygion (R)
chL	Cheilion (L)
chR	Cheilion (R)
goL	Gonion (L)
goR	Gonion (R)