Biological and Physical Anthropology Commons^™

Musculoskeletal Markers: A Comparison Of The Influence Of Three Biological Factors On Robusticity, Megan Greene

LSU Master's Theses

Research suggests that musculoskeletal markers (MSMs) can provide information about the lives of deceased individuals. The majority of studies focus on single factors that influence the morphology of MSMs in pre-modern societies (i.e., medieval, hunter-gatherers, preindustrial, etc.). This study analyzes MSMs of modern skeletons of 72 females and 83 males from the United States whose ages at death range from 30 to 89 to understand the relationship between various biological factors and MSM morphology. Eight MSMs (attachments of pectoralis major, deltoid, brachialis, supinator, iliopsoas, gluteus maximus, quadriceps, and soleus) were analyzed and categorized as phases zero, one, two, or three …

Assessing The Effect Time And Burial Environment Have On The Use Of The Lamendin Dental Age Estimation Method In Two Archaeological Samples From Jordan, Sabrina L. Williamson

LSU Master's Theses

The Lamendin method is a dental age estimation method that can be used by biological anthropologists when the skeletal anatomy is not available. The Lamendin method utilizes an index derived from measurements of the tooth root height (RH), periodontal line height (PLH), and root transparency height (RTH) to estimate the age of an individual. Although this method is often used in forensic contexts, its presence in the bioarcheological literature is almost non-existent. Research that mentions the Lamendin method conflict about whether the method can be used in specimens with longer postmortem intervals (PMIs) and in various depositional environments. This study …

"The Face Of The Agency": Interviews With Death Investigators In South Louisiana, Natalie H. King

LSU Master's Theses

According to the American Board of Medicolegal Death Investigators, “the role of the medicolegal death investigator is to investigate any death that falls under the jurisdiction of the medical examiner or coroner, including all suspicious, violent, unexplained and unexpected deaths” (American Board of Medicolegal Death Investigators [ABMDI], n.d.). As such, a death investigator has a job that is highly intense and stressful at a level similar to that of doctors, nurses, emergency medical technicians (EMTs), and firefighters. The majority of the literature written about death investigators focuses on procedural issues, while there seemingly is a lack of literature focused on …

The Bioarchaeology Of The Lake St. Agnes Mound (16av26) Site: Exploring Diet From Fragmentary Remains, Kenneth Tremblay

LSU Master's Theses

The Lake St. Agnes Mound (16AV26) site, located in central Louisiana, is composed of two, temporally distinct burial components; one, a Coles Creek period component, at the base of the mound (~780-880 CE), and the other, a Plaquemine subperiod component, at its apex (~1400 CE). These burials, though heavily fragmented, commingled, and representing small sample sizes, are valuable for studying the transition to agriculture in the Lower Mississippi River Valley. It is now clear that for the Coles Creek period, maize was likely only a ceremonial crop rather than a staple food source (Kidder, 1993; Listi, 2011). The reliance on …

Assessing The Validity Of The Estimation Of Population Affinity From The Maxillary Hard Palate: An Empirical Approach Using A Modern Forensic Sample, Christopher M. Goden

LSU Master's Theses

In response to Beathard and DiGangi’s (2020) call to action for empirical assessment of population affinity estimation methodology, this study investigates the validity of maxillary palate shape as an indicator of ancestral population affinity for human skeletal remains through the use of Elliptical Fourier Analysis (EFA) and Linear Discriminant Function Analysis (DFA). Further, this study also places emphasis on the expressed variation of palate shape within and between population groups exemplified by Principal Component Analysis (PCA) of EFA data.

Computed tomography scans of 180 individuals of Black, White, and Hispanic population affinities were obtained from the New Mexico Decedent Imaging …

Using The Seventh Rib Length And Depth Measurements As A Method To Estimate Ancestry And Sex In Adults, Alexandria M. Amaki

LSU Master's Theses

This study tested the correlation of dimensions of the left seventh rib (L7) to ancestry and sex in adult humans. The first hypothesis, based on Bergmann’s theory, is that Black (African-American) individuals will have smaller L7 dimensions than White individuals (Americans of primarily European descent). The second hypothesis is that males, due to sexual dimorphism, will have larger ribs than females. 299 individuals from the Hamann-Todd Skeletal Collection were used in the study, approximately evenly distributed among sex and ancestry groups. Five variables were examined, including three measurements (length, width, and width point), and two calculations (area and ratio). A …

Mapping Louisiana's Missing: Spatiotemporal Profiling Of Louisiana's Missing Persons- An Experimental Application Of Geographic Information Systems And Forensic Anthropology, Liam J. Johnson

LSU Master's Theses

The growing number of unresolved unidentified and missing persons cases in the United States is this nation’s ‘silent mass disaster’ (Ritters, 2007). In addition to contextualizing biocultural traits of these cases, forensic anthropologists are uniquely qualified to address this underrecognized humanitarian crisis due to their proven ability to bridge conflicting stakeholders in often complex sociopolitical environments and to create improved opportunities for community collaboration. This project explores local and state demographic trends of missing persons cases and how this information can be used to assist investigative agencies with their missing population, analyzes gaps in identification data, and selects optimal locations …

Reconsidering The Obstetrical Dilemma: Correlations Between Head And Pelvic Size, Kelsey Catrice Fox

LSU Master's Theses

The Obstetrical Dilemma (OD) theory has become canon in biological anthropology. The OD posits that i] dystocia results from bipedal mothers and encephalized infants, ii] contrasting selection for bipedality and obstetrics hinders locomotive efficiency, and iii] the contradicting requirement of the fetus being small enough to pass through the birth canal yet being cognitively advanced enough to cling to its mother after birth. Females, theoretically, exhibit deficient gait efficiency for the sake of successful childbirth. An obstetric advantage theory has been posited where taller individuals with a larger head size have larger pelves. If the distance between the acetabulae increases …

Estimation Of Age From The Auricular Surface Of The Ilium Through The Utilization Of 3d Scanning And Gis, Krista Bennett

LSU Master's Theses

The ability to produce age estimations for adult skeletons has been a focus of forensic anthropologists for decades. Most age estimation methods for adult remains provide age ranges that are too narrow, too broad, or too vague. This project sought to combine 3D scans with GIS to produce morphological maps of the auricular surface of the os coxa in order to identify quantifiable characteristics for age assessment that could be used for generating narrower age range estimates for older adult remains.

A NextEngine ™ HD Desktop 3D scanner was used to scan the auricular surfaces of 384 os coxae from …

Comparing The Accuracy Of Close-Range Photogrammetry To Microct Scanning Via Surface Deviation Analysis Of 3d Digital Models Of Hominin Molars, Margaret J. Furtner

LSU Master's Theses

The purpose of this study is to assess whether close-range photogrammetry is a viable alternative to microCT scanning for the construction of 3D models of isolated teeth. Photogrammetric scanning is more cost-effective and less time-consuming than CT scanning, and in paleoanthropological contexts eliminates the possibility of exposing fossils to doses of radiation that affect ESR dating. Samples of fossil (Homo naledi), archaeological, and contemporary human molars were scanned via microCT scanning and close-range photogrammetric scanning. The photogrammetric scans included 96 digital images per tooth which were used to construct a 3D triangular mesh. The resulting models of the tooth crowns …

"La Llorona": Evolución, Ideología Y Uso En El Mundo Hispano, Raquel Sáenz-Llano

LSU Master's Theses

This thesis studies the evolution, ideology and use of the myth of La Llorona through time in the Hispanic World. Considering this myth as one of the most known traditional narratives of the American continent, I begin by providing visual, ethnohistorical and ethnographical insights of weeping in Mesoamerica and South America and the specific mention of a weeping woman in some Spanish chronicles to say how western values were stablished in “the new continent” through this legend. I suggest that during the postcolonialism the legend did not tell anymore about a mother that cries and search a place for their …

Using Entheseal Length To Infer Locomotor Type, Antonio R. Otero

LSU Master's Theses

An enthesis is a marking (tuberosity or impression) on bone where a muscle or tendon attaches and it can be influenced by age, sex, physical activity, and muscle size. This study ascertains whether entheses, long bones, and their respective ratios can be used as an indicator for mode of locomotion in four primate species: Ateles geoffroyi (Geoffroy’s spider monkey), Colobus guereza (mantled guereza), Hylobates lar (lar gibbon), and Macaca mulatta (rhesus monkey). Seven entheses on four long bones were chosen based on importance of the muscle in relation to specific locomotor types, use in other studies, and …

Metacarpal Ratio And Its Relation To Sexual Dimorphism In Primates With Different Mating Strategies, Emilee Hart

LSU Master's Theses

The digit ratio (2D:4D) is a sexually dimorphic trait in mammalian hands that is a result of levels of prenatal androgen exposure (PNAE) during limb development. Previous studies have shown that females have a higher ratio than males and that sexual dimorphism in the ratio is greater in species with polygynous mating strategies and high levels of intermale aggression compared to monogamous species with low intermale aggression. This study used metacarpals instead of phalanges to test the hypotheses that the metacarpal ratio (2Mc:4Mc) will be higher in females than males within a species and that the ratio would be more …

Scaling Relationships Between Cranial Morphological Features And Cranial Capacity In Modern Humans, Jacob Jesch

LSU Master's Theses

Certain cranial morphologies referred to here as “cranial predictor features” are known to allometrically scale with body mass at statistically significant levels. Brain size likewise is known to scale with body mass, with brain-to-body-mass ratio being expressed numerically via the encephalization quotient. The study at hand aims to demonstrate whether brain size via its skeletal proxy of cranial capacity also scales with cranial predictor features. Correlation analysis was employed on two samples of contemporary male and female modern humans, respectively, in order to determine the statistical significance and degree of association between cranial predictor features and cranial capacity, as well …