The cavities were drilled within a few seconds under microscope, and the carbide tungsten burrs were water-cooled during the preparation in the occlusal aspect of the first maxillary molars (size of the bur: 0.6 mm, 0.05 ISO).
The molar size gradient of H. naledi follows the M1 < M2 < M3 pattern, unlike the M3 < M2 < M1 pattern in H. floresiensis, and the mandibular molars are relatively mesiodistally long and buccolingually narrow compared to those of H. floresiensis.
Because molar size and shape of first and second-generation wild-domestic crosses do not differ statistically in any comparisons (all MANOVA and Wilcoxon tests p > 0.05), they were pooled for all analyses.
The smaller-sized Proconsul nyanzae excepted, the above-cited hominoids can be compared with MFI-K171 since they are in the same range of molar size.
Despite their complex genetic heritage, each breed used in this study – and known to differ in overall body size (e.g. [ 58]) - displays a unique combination of molar size and shape.
Irrespective of differences in the local, natural and human environment that they inhabit, domestic breeds share common morphometric characteristics (in terms of molar size and shape) compared to wild boar.
The mandibular M3 is not reduced in H. naledi, thus revealing an increasing molar size gradient that contrasts with reduction of the M3 in H. sapiens.
The mandibular M3 is not reduced in DH1, thus revealing an increasing molar size gradient that contrasts with reduction of the M3 in MP and LP Homo.
Wild boar populations show clear patterns of biogeographic variation in both molar size and shape.
Supernumerary teeth and increased molar size and complexity are also seen with expression of an Edar receptor promoted by K14.
