Biological and Physical Anthropology Commons^™

Bipedalism Is A Balancing Act: Talus Landmarking In Facultative Bipedal Primates, Anita Patane

Undergraduate Honors Theses

Obligate bipedal locomotion, mandatorily walking on two legs, is vastly important as it is the fundamental precursor to the human lineage; it precedes tool usage and language. Chimpanzees, our closest living ancestors for the human ancestral condition, are often the proxy and are the dominant subject of human bipedalism studies. There are additional species, such as arboreal Black Spider Monkeys (Ateles paniscus) who habitually travel through the trees bipedally. These facultative bipedal primates (FBP) introduce a new lens to how modern human talus and calcaneus’ mobility has adapted to environmental shifts such as the transition from arboreal to …

Understanding The Environmental And Genetic Influence On Fluctuating Asymmetry And Developmental Instability In Primates, Ashly N. Romero

Graduate Theses and Dissertations

This dissertation explored the impact of environmental factors on the development and perpetuation of fluctuating asymmetry (FA) and sought to understand the role evolution may play in the FA exhibited in two primate populations: the free-ranging Cayo Santiago rhesus macaques (Macaca mulatta) and the Southwest National Primate Research Center olive baboons (Papio hamadryas anubis). Demographic, ontogenetic, secular, external, and genetic factors were examined. Specifically, this dissertation investigated FA over all ontogenetic stages, across decades, between sexes, in association with ecological catastrophes, and with tooth pathology to try and tease apart factors that may influence FA and developmental instability. This dissertation …

A Review Of Theropithecus Oswaldi With The Proposal Of A New Subspecies, Dagmawit Abebe Getahun, Eric Delson, Chalachew Mesfin Seyoum

Publications and Research

Theropithecus oswaldi darti, as currently understood, is the oldest Theropithecus taxon in the fossil record and the earliest subspecies in the Theropithecus oswaldi lineage. Theropithecus oswaldi darti is typified at the site of Makapansgat in South Africa, and a similar form (T. o. cf. darti) is usually recognized at Hadar, Dikika, some Middle Awash localities, and Woranso-Mille in Ethiopia. This taxon is also tentatively believed to occur in Kenya at Kanam and Koobi Fora and in Member C of the Shungura Formation in Ethiopia. While there is a general consensus that the East African ‘darti’ specimens are …

Considerations For Post-Processing Parameters In Mixed-Method 3d Analyses: A Mesolithic Mandibular Case Study, Robert Z. Selden Jr., Lauren N. Butaric, Kersten Bergstrom, Dennis Van Gerven

CRHR: Archaeology

The production of three-dimensional (3D) digital meshes of surface and computed tomographic (CT) data has become widespread in morphometric analyses of anthropological and archaeological data. Given that processing methods are not standardized, this leaves questions regarding the comparability of processed and digitally curated 3D datasets. The goal of this study was to identify those processing parameters that result in the most consistent fit between CT-derived meshes and a 3D surface model of the same human mandible. Eight meshes, each using unique thresholding and smoothing parameters, were compared to assess whole-object deviations, deviations along curves, and deviations between specific anatomical features …

Assessing Craniofacial Variation And Sexual Dimorphism In A Skeletal Sample From Medieval Prussia, Carrisa Sue Pritchard

Cal Poly Humboldt theses and projects

The objective of this study is to assess the degree of craniofacial variation and sexual dimorphism exhibited by a skeletal sample of 32 adult (14 probable female, 16 probable male, 2 indeterminate) crania from Bezławki, a medieval (14th-15th century) Prussian cemetery site located in modern northeastern Poland. Christian Crusaders were actively colonizing the region during this time period; therefore, the cemetery is likely to include both indigenous Prussians and settlers. It is currently unknown whether the skeletal sample at Bezławki represents a morphologically homogenous or heterogeneous group.

To address this question, three-dimensional cranial landmark data were collected using a Microscribe. …

Investigating Cranial Variation In Japanese Populations Using Geometric Morphometrics, Beatrix Dudzik

Doctoral Dissertations

The Japanese archipelago exhibits an immense amount of variation in culture and history, despite the lay population mostly considering the modern Japanese a homogeneous population. Japan has experienced an amazing amount migration activity. These migration events are well represented in the archaeological record and have provided fodder for hypotheses proposed for peopling of the new world.

Biological anthropologists have tested hypotheses surrounding the initial peopling of the islands using linear data in conjunction with non-metric traits of the skull. Recent molecular studies have provided evidence for population substructure, which suggests an original founding group of North Asian descent, and a …

Secular Change Of The Modern Human Bony Pelvis: Examining Morphology In The United States Using Metrics And Geometric Morphometry, Kathryn R.D. Driscoll

Doctoral Dissertations

The human bony pelvis has evolved into its current form through competing selective forces. Bipedalism and parturition of large headed babies resulted in a form that is a complex compromise. While the morphology of the human pelvis has been extensively studied, the changes that have occurred since the adoption of the modern form, the secular changes that continue to alter the size and shape of the pelvis, have not received nearly as much attention. This research aims to examine the changes that have altered the morphology of the human bony pelvic girdle of individuals in the United States born between …