Evaluation of non-metric variation in the crania of black and white perinates

Weinberg, Seth M.; Putz, David A.; Mooney, Mark P.; Siegel, Michael I.

doi:10.1016/j.forsciint.2005.02.009

Cited by 19 publications

(23 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is worth noting that Weinberg et al (2005) did not find a statistical association between ancestry and a visual coding of alveolar prognathism. This discrepancy may arise from various potential factors.…”

Section: Discussionmentioning

confidence: 74%

“…This trait has been shown to exist along a continuum which at one end shows a morphology that has essentially no prominence/projection, and at the other extreme can show several millimeters of projection (Franciscus, 1995; Weinberg et al, 2005). African-derived populations show a higher frequency of less projecting nasal spines, while European-derived populations tend to have greater ANS prominence, thus this trait is commonly included in ancestry estimation of unidentified crania.…”

Section: Discussionmentioning

confidence: 99%

“…While Weinberg et al (2005) have demonstrated that qualitative trait assessment can be used to estimate ancestry starting at prenatal ages, quantitative research on this topic is lacking. To get a more accurate picture of midfacial shape changes through ontogeny, and across populations, three-dimensional geometric morphometric methodologies should be utilized.…”

mentioning

confidence: 99%

“…Qualitative traits, such as anterior nasal spine prominence, have been documented to vary between populations at prenatal ages. Weinberg et al (2005) investigated a wide range of craniofacial traits to determine which were most useful for estimating ancestry (African-American vs. Euro-American) in fetal samples. They found that occipital squamous shape, ANS prominence, subnasal margin definition, vomer shape, and temporal squama shape were the most accurate for predicting whether an individual was of African or European descent.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Fetal and neonatal maxillary ontogeny in extant humans and the utility of prenatal maxillary morphology in predicting ancestral affiliation

Nicholas

2016

American J Phys Anthropol

View full text Add to dashboard Cite

Objectives The midface of extant H. sapiens is known to undergo shape changes through fetal and neo-natal ontogeny; however, little work has been done to quantify these shape changes. Further, while midfacial traits which vary in frequency between populations of extant humans are presumed to develop prenatally, patterns of population-specific variation maxillary shape across ontogeny are not well documented. Only one study of fetal ontogeny which included specific discussion of the midface has taken a 3D geometric morphometric approach, and that study was limited to one population (Japanese). The present research project seeks to augment our understanding of fetal maxillary growth patterns, most especially in terms of intraspecific variation. Materials and Methods Three-dimensional coordinate landmark data were collected on the right maxillae of 102 fetal and neo-natal individuals from three groups (Euro-American, African-American, “Mixed Ancestry”). Results Shape changes were seen mainly in the lateral wall of the piriform aperture, the anterior nasal spine, and the subnasal alveolar region. The greatest difference across age groups (2nd Trimester, 3rd Trimester, Neonates) was between the second and third trimester. Euro-Americans and African-Americans clustered by population and differences in midfacial morphology related to ancestry could be discerned as early as the second trimester (p=0.002), indicating that population variation in maxillary morphology appears very early in ontogeny. Discussion The midface is a critical region of the skull for assessing ancestry and these results indicate that maxillary morphology may be useful for estimating ancestry for prenatal individuals as young as the second trimester.

show abstract

Section: Discussionmentioning

confidence: 74%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Fetal and neonatal maxillary ontogeny in extant humans and the utility of prenatal maxillary morphology in predicting ancestral affiliation

Nicholas

2016

American J Phys Anthropol

View full text Add to dashboard Cite

show abstract

“…Latham et al 1975). Moreover, there are distinct morphological differences in vomer shape in European-and African-derived individuals that manifest early in development (Weinberg et al 2005). As such we included this intramembranous aspect of the septum in our analysis.…”

Section: Methodsmentioning

confidence: 99%

Nasal septal and craniofacial form in European‐ and African‐derived populations

2012

View full text Add to dashboard Cite

As a component of the chondrocranium, the nasal septum influences the anteroposterior dimensions of the facial skeleton. The role of the septum as a facial growth center, however, has been studied primarily in longsnouted mammals, and its precise influence on human facial growth is not as well understood. Whereas the nasal septum may be important in the anterior growth of the human facial skeleton early in ontogeny, the high incidence of nasal septal deviation in humans suggests the septum's influence on human facial length is limited to the early phases of facial growth. Nevertheless, the nasal septum follows a growth trajectory similar to the facial skeleton and, as such, its prolonged period of growth may influence other aspects of facial development. Using computed tomography scans of living human subjects (n = 70), the goal of the present study is to assess the morphological relationship between the nasal septum and facial skeleton in European-and African-derived populations, which have been shown to exhibit early developmental differences in the nasal septal-premaxillary complex. First we assessed whether there is population variation in the size of the nasal septum in European-and African-derived samples. This included an evaluation of septal deviation and the spatial constraints that influence variation in this condition. Next, we assessed the relationship between nasal septal size and craniofacial shape using multivariate regression techniques. Our results indicate that there is significant population variation in septal size and magnitude of septal deviation, both of which are greater in the European-derived sample. While septal deviation suggests a disjunction between the nasal septum and other components of the facial skeleton, we nevertheless found a significant relationship between the size of the nasal septum and craniofacial shape, which appears to largely be a response to the need to accommodate variation in nasal septal size.

show abstract