Skip to main content
. 2012 Oct 26;7(10):e40398. doi: 10.1371/journal.pone.0040398

Table 2. List of landmarks used in this study.

Abbreviation Definition Module Sub-module Justification of choice Type of landmark
IRZ Inferior root of zygomatic bone in lateral view Face Zygomatic Origin of masseter muscle. Provides a measure of the height of arch. Area of maximum strain during molar, premolar and postcanine teeth biting (Richmond et al. [160]) in Macaca fascicularis and Au. africanus (Strait et al. [135]). Type II
SRZ Superior root of zygomatic bone in lateral view Face Zygomatic Origin of masseter muscle. Provides a measure of the height of arch. Area of maximum strain, during molar, premolar and postcanine teeth biting (Richmond et al. [160] in Macaca fascicularis and Au.africanus (Strait et al. [135]). Type II
ZI Zygomaxillare inferior Face Zygomatic Easily identifiable. Zone of maximum strain during molar, premolar and postcanine dentition biting (Strait et al. [135]). Type I
ZS Zygomaxillare superior Face Zygomatic Easily identifiable. Zone of maximum strain during molar, premolar and postcanine dentition biting (Strait et al. [135]). Type I
TMJ The center of the temporo-mandibular joint Face Zygomatic One of the parameters determining the maximum bite force. TMJ is a load-bearing joint subject to high strains (Hylander [161], Spencer [39]). Type II
ALV Alveolare Face Oral Area of high strain during incisor biting. Type I
I1 The alveolar margin of the first incisor at its buccal surface Face Oral Measures the antero-posterior position of the first incisors, and incisor cross-sectional area. Type I
SUBN Nasospinale: meeting of the two premaxillary bones in the midline at the inferior-most margin of the nasal aperture Face Oral Easily identifiable developmental homology. Zone of moderate strain during postcanine dentition biting in Macaca fascicularis (Richmond et al. [160]) and Au. africanus (Strait et al. [135]). Type I
I2/C Premaxillary suture at the inferior margin of the nasal aperture in the midline Face Oral Easily identifiable developmental homology. Zone of moderate strain during postcanine dentition biting (Strait et al. [135]). Type I
PAL Mid-palatal point at the level of M1 Face Oral Provides a measure of palatal depth. Type II
M1 P4/M1 contact at lingual alveolar surface Face Oral Easily identifiable developmental homology. Indicates the position of a bite point. Type I
M2 M1/M2 contact at lingual alveolar surface Face Oral Easily identifiable developmental homology. Indicates the position of a bite point. Type I
M3 Landmark immediately posterior of the M3 Face Oral Easily identifiable developmental homology. Indicates the position of a bite point. Type I
SPHB Sphenobasion, the meeting of the spheno-occipical suture with the petrous temporal bone Neurocranium Basicranium Easily identifiable developmental homology. Type I
APET The apex of the petrous pyramid of the temporal bone Neurocranium Basicranium Easily identifiable developmental homology. Type I
SPHT The meeting of the sphenotemporal suture with the petrous pyramid Neurocranium Basicranium Easily identifiable developmental homology. Type I
PYRS The contact between the petrous pyramid and the posterior-most aspect of the external auditory meatus Neurocranium Basicranium Easily identifiable developmental homology. Type I
PYRI Temporo-parietal-occipital junction Neurocranium Basicranium Easily identifiable developmental homology. Type I
BAS Basion, the anterior-most point at the foramen magnum Neurocranium Basicranium Easily identifiable developmental homology. Type I
OPI Opisthion, the posterior-most point at the foramen magnum Neurocranium Basicranium Easily identifiable developmental homology. Type I