A test of the (hu)MANid analytical program using a native American population.

OBJECTIVES: Recently, Berg and Kenyhercz (2017) developed a free web-based software package, (hu)MANid, that classifies mandibles by ancestry and sex based on either linear or mixture discriminant analysis of 11 osteometric and six morphoscopic variables. The metric and morphoscopic variables assessed using (hu)MANid have been determined to be highly replicable, however, few external validation studies have been conducted. MATERIALS AND METHODS: This article provides a test of the (hu)MANid analytical software using an independent sample (n = 52) of Native American mandibles from the Great Lakes region to investigate the accuracy of the program for identifying this important demographic group. RESULTS: When processed using linear discriminant analysis in (hu)MANid, 82.7% of the mandibles (43/52) were correctly classified as Native American. When processed using mixture discriminant analysis in (hu)MANid, 67.3% of the mandibles (35/52) were correctly classified as Native American. The difference in accuracy between the methods is not statistically significant. DISCUSSION: Our results suggest (hu)MANid is an accurate tool for anthropologists attempting to determine whether skeletal remains are Native American when establishing forensic significance, creating a biological profile, and conducting work associated with the federal Native American Graves Protection and Repatriation Act.

Genomes from Verteba cave suggest diversity within the Trypillians in Ukraine.

The transition to agriculture occurred relatively late in Eastern Europe, leading researchers to debate whether it was a gradual, interactive process or a colonisation event. In the forest and forest-steppe regions of Ukraine, farming appeared during the fifth millennium BCE, associated with the Cucuteni-Trypillia cultural complex (CTCC, ~ 5000-3000 BCE). Across Europe, the Neolithisation process was highly variable across space and over time. Here, we investigate the population dynamics of early agriculturalists from the eastern forest-steppe region based on the analyses of 20 ancient genomes from the site of Verteba Cave (3935-825 cal BCE). Results reveal that the CTCC individuals' ancestry is related to both western hunter-gatherers and Near Eastern farmers, has no local ancestry associated with Ukrainian Neolithic hunter-gatherers and has steppe ancestry. An Early Bronze Age individual has an ancestry profile related to the Yamnaya expansions but with 20% of ancestry related to the other Trypillian individuals, which suggests admixture between the Trypillians and the incoming populations carrying steppe-related ancestry. A Late Bronze Age individual dated to 980-825 cal BCE has a genetic profile indicating affinity to Beaker-related populations, detected close to 1000 years after the end of the Bell Beaker phenomenon during the third millennium BCE.

Assessing subsistence and its relationship to cultural complexity in the late prehistoric upper Midwest: A new perspective provided by dental health.

OBJECTIVE: Previous researchers have assumed that the Late Prehistoric Oneota were less reliant on maize agriculture than their Middle Mississippian neighbors to the south. This assumption is based on the idea that intensive maize agriculture is related to sociopolitical complexity, and that the climate of the Great Lakes region was less conducive to full-scale agriculture than that of the American Bottom. Here, we assess the diet of the Oneota using dental pathology to test the hypothesis that the Oneota in Eastern Wisconsin were highly reliant on maize agriculture. MATERIALS AND METHODS: To test our hypothesis, skeletal remains representing 187 individuals and 1,102 teeth were examined from nine Oneota sites from the Middle Fox and Koshkonong Localities, as well as the Late Woodland/Middle Mississippian site of Aztalan. Dental caries, antemortem tooth loss (AMTL), and dental abscesses were assessed for each individual in the sample. Dental pathologies in the Oneota groups were compared to each other based on Locality and to the Aztalan population using chi-squared tests. RESULTS: Dental caries rates for the Oneota, based on the tooth count approach, were observed at 16.8% for the Middle Fox Locality, and 49% for the Koshkonong Locality. Comparatively, the Late Woodland/Middle Mississippian population from Aztalan had a tooth count rate of 19.5%. AMTL rates were similar across samples. Dental abscessing was universally low. DISCUSSION: The relatively high rate of dental caries among the Oneota is comparable to Middle Mississippian populations from throughout the Midwest, suggesting similar reliance on maize between the groups.

A test of the preauricular sulcus as an indicator of sex.

OBJECTIVES: Although the presence of a preauricular sulcus is often cited as an indicator of female sex, very little research has been conducted to substantiate this claim. This article examines both the relationship between the incidence and morphology of the preauricular sulcus and sex. MATERIALS AND METHODS: A total of 500 left ossa coxae from the Hamann-Todd Human Osteological Collection belonging to 261 males and 239 females were examined to investigate the relationship between the preauricular sulcus and sex. The sample includes both American Blacks and Whites. Each individual was scored based on groove presence and morphology. Differences between the sexes in terms of overall prevalence and morphology were investigated using chi-squared tests. Additionally, possible relationships between ancestry and the manifestation of the preauricular sulcus were investigated using multiple regression analysis. RESULTS: Overall, the presence or absence of the preauricular sulcus resulted in correct sex assessment in 75.8% of ossa coxae. However, the accuracy differed between the sexes, with 62.84% of males and 89.96% of females being assessed correctly. Males were significantly more likely to display a short, narrow sulcus (score 4) than females, whereas females were observed to be significantly more likely to have a wide, long sulcus. Ancestry was not related to sulcus manifestation. DISCUSSION: The results presented here suggest that the presence of a preauricular sulcus should not be considered positive proof of female sex. However, the complete lack of a sulcus could be considered suggestive of male sex.