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Relevant bibliographies by topics / Morphometrics / Dissertations / Theses

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Dissertations / Theses on the topic 'Morphometrics'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Krey, Karl-Friedrich. "Untersuchungen zur Morphologie von dentofazialen und skelettalen Strukturen Erwachsener mit Methoden der geometrischen Morphometrie." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-63908.

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Bibliographische Beschreibung: Krey, Karl-Friedrich Untersuchungen zur Morphologie von dentofazialen und skelettalen Strukturen Erwachsener mit Methoden der geometrischen Morphometrie Universität Leipzig, Habilitation 251 S., 319 Lit.,109 Abb., 93 Tab. Referat: Die kieferorthopädische Diagnostik beruht neben der klinischen Untersuchung auf der metrischen Auswertung (Streckenmessungen, Winkelmessungen, Verhältniszahlen) von standardisierten extraoralen Fotos, Fernröntgenseitbildern und Modellen der Kiefer. Diese Verfahren werden denen der klassischen Morphometrie zugerechnet. In den letzen Ja

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2

Plomp, Kimberly Anne. "Quantifying palaeopathology using geometric morphometrics." Thesis, Durham University, 2013. http://etheses.dur.ac.uk/6962/.

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Palaeopathology is the study of disease and injury in archaeological bone. Traditional methods rely heavily on macroscopic description which can have a high degree of subjectivity and error, as well as limiting the types of research questions possible. Geometric morphometrics are a suite of shape analysis techniques and provide an opportunity to investigate possible relationships between skeletal morphological variation and disease. This thesis aims to demonstrate the potential of applying these methods in palaeopathological research and the results illustrate the benefits of using quantifiabl

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Turner, Jennifer. "Wide-field anterior ocular surface morphometrics." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/25655/.

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The current understanding of anterior eye shape in humans is limited due to available technology and its accessibility. Accurate curvature metrics of specific areas of the peripheral cornea, corneo-limbal junction and anterior sclera have remained obscured by the limits of the palpebral aperture, since the upper and lower eyelids cover most of the vertical aspect. This thesis starts by comparing the ‘gold standard’ keratometry measurements to commonly used topographic systems. Keratometric analogues were found to be significantly different and in addition provided spurious vertical anterior oc

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Sharda, Gaurav VinodKumar. "Cerebral aneurysm morphometrics from 2D biplane angiograms." Thesis, University of Iowa, 2011. https://ir.uiowa.edu/etd/5058.

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Cerebral aneurysm is a local dilation in a blood vessel in brain that can rupture and cause hemorrhagic stroke. A study by International Study of Unruptured Intracranial Aneurysms (ISUIA) has collected a large database of bi-plane cerebral angiograms from patients who were followed longitudinally. This unique data may be mined for testing hypotheses on the role of morphology metrics in rupture risk. A method of reconstructing an approximate 3D geometry of aneurysms from bi-plane angiograms was developed using techniques in curve morphing. Aneurysms from a pilot population of 150 patients were

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Chiotakis, Christina. "Pliocene crocodilians of chinchilla: Identification using dental morphometrics." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/119219/1/Christina_Chiotakis_Thesis.pdf.

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The key research problem of this project was to identify Australian crocodilian species from isolated teeth, which make up the largest available fossil data set. Three-dimensional images of the teeth were created from computed tomography (CT) data and statistical comparisons allowed several extinct species to be distinguished from each other and from modern crocodiles. The research provides a new methodology for identifying crocodilian teeth, and potential for further usage of this methodology including identifying theropod dinosaurs and other species from isolated teeth.

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Dibble, Jacob Leonard. "Urban morphometrics : towards a quantitative science of urban form." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27955.

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The field of Urban Morphology is a branch of academic research focussing on the study of urban form. Although prior works in this field had been undertaken earlier, the formal establishment of the discipline of Urban Morphology can be traced back to the establishment of the International Seminar on Urban Form in 1994, and the subsequent Journal of Urban Morphology. The efforts in this field are found to be largely reliant, from the point of view of methods and definitions, on two foundational research roots, the Conzenian and the Muratorian processes. Both of these dominant traditions emerged

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Grass, Andy Budd Ann F. "Examining ecosystem structure and disparity through time using geometric morphometrics." [Iowa City, Iowa] : University of Iowa, 2009. http://ir.uiowa.edu/etd/367.

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8

Woo, Johnathan. "Evaluating facial ontogeny of avian embryos using 3D geometric morphometrics." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/50056.

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Objectives: In order to study abnormal facial development, reference standards of normal development are required. It is challenging to obtain 3D data on early embryos, since they are comprised of non-differentiated tissue. We used optical projection tomography (OPT) (Bioptonics, UK), which images transparent specimens with UV light. Here we used carefully staged chicken embryos to measure facial morphogenesis over time. Methods: Chicken eggs (n=32) were incubated for 3.5-6 days (stage 20, 24, 28, 29). Embryo heads were fixed in formaldehyde, embedded in agarose, dehydrated in methanol, and th

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Björkeson, Felix. "Autonomous Morphometrics using Depth Cameras for Object Classification and Identification." Thesis, Linköpings universitet, Datorseende, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-95240.

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Identification of individuals has been solved with many different solutions around the world, either using biometric data or external means of verification such as id cards or RFID tags. The advantage of using biometric measurements is that they are directly tied to the individual and are usually unalterable. Acquiring dependable measurements is however challenging when the individuals are uncooperative. A dependable system should be able to deal with this and produce reliable identifications. The system proposed in this thesis can autonomously classify uncooperative specimens from depth data.

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Carpiaux, Weston. "GEOMETRIC MORPHOMETRICS CLUSTERS CRANIOFACIAL MORPHOLOGY DIFFERENTLY THAN TRADITIONAL CEPHALOMETRIC MEASUREMENTS." Master's thesis, Temple University Libraries, 2014. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/284644.

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Oral Biology<br>M.S.<br>Objectives: The purpose of the study was to compare a geometric morphometric approach for grouping different skeletal malocclusions to a traditional cephalometric approach for a subject population undergoing orthognathic surgery for treatment of malocclusion. Methods: Traditional cephalometric measurements were used to diagnose the skeletal malocclusion each subject in both the sagittal (SNA, SNB, ANB, Facial Angle) and vertical dimensions (SN-MP, FMA, Downs Y-Axis, Facial Axis, P-A Face Height). These were compared to skeletal diagnoses given by the treating surgeon. L

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Grass, Andy Darrell. "Examining ecosystem structure and disparity through time using geometric morphometrics." Thesis, University of Iowa, 2009. https://ir.uiowa.edu/etd/367.

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Functional morphology and morphometric studies on various mammalian groups have shown marked differences in crania and mandible shape based on dietary preferences and feeding habits. In this study I used three-dimensional geometric morphometric methods to measure the shape of crania and mandibles of herbivorous and omnivorous mammals from three formations in northwestern Nebraska to explore the structure and disparity of ecosystems through time: The White River Group (Chadronian/Orellan/Whitneyan), the Arikaree Group (Arikareean), and the Ogallala Group (Hemingfordian/Barstovian/Clarendonian).

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12

Schilling, Daniel Edward. "Assessment of morphological and molecular genetic variation of freshwater mussel species belonging to the genera Fusconaia, Pleurobema, and Pleuronaia in the upper Tennessee River basin." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/54030.

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Select freshwater mussels in the genera Fusconaia, Pleurobema, and Pleuronaia were collected primarily in the upper Tennessee River basin from 2012 to 2014 for phylogenetic and morphological assessments. Freshwater mussels in these genera are similar in appearance, hence the need for phylogenetic verification and morphological assessment. Phylogenetic analyses of the mitochondrial gene ND1 and the nuclear gene ITS1 revealed three unrecognized, phylogenetically distinct species. These species were separated from their closest congener by 2.85%, 3.17%, and 6.32% based on pairwise genetic distanc

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Champagne, Tracy Ann Neil. "Oligocene coral evolution in Puerto Rico and Antigua: morphometric analysis of Agathiphyllia, Antiguastrea, and Montastraea." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/1128.

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The University of Iowa Paleontology Repository maintains an extensive collection of Caribbean coral specimens. This study includes 285 specimens, of which approximately 75 are thin-sections of three previously identified Oligocene genera including: Montastraea Blainville, 1830 (=Orbicella Dana 1846), Antiguastrea Vaughan, 1919, and Agathiphyllia Reuss, 1864 (=Cyathomorpha Reuss, 1868). This study includes: photography of colony surfaces and thin-sections of representative specimens of each species, and the identification of the three Oligocene genera Montastraea, Antiguastrea, and Agathiphylli

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Cassara, Jason Anthony. "Patterns of variation within the Montastraea "annularis" species complex: results from 2-D and 3-D geometric morphometrics." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/786.

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Geometric morphometrics are a useful tool for studying morphological variation in scleractinian corals, extant and extinct. In the case of modern specimens, three-dimensional features of the calical surface can be measured. These features are rarely preserved in fossil corals, however, necessitating measurement of 2-D landmarks in transverse thin-sections of corallites. Unfortunately, 2-D and 3-D methods often yield differing answers to questions about interspecific, intraspecific and intracolonial variation. This issue is addressed in the present study by directly comparing results of 2-D and

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Johnson, Lisa. "Investigating morphometrics, movement and oviposition in the Lissotriton and Triturus newts." Thesis, University of Chester, 2015. http://hdl.handle.net/10034/617674.

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This thesis focuses on the UK pond newts, the smaller bodied species known as Lissotriton newts and the larger Triturus. The primary aims were to identify and address gaps in the current Tritus/Lissotriton literature; to provide a more complete understanding of this group as many assumptions about morphology and physiology exist untested, for example that larger/fatter females will lay more eggs. Specifically for Lissotriton helveticus, many assumptions are based on the similarly sized Lissotriton vulgaris, potentially missing any species specific differences. A further focus of the work was t

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Borobia, Mônica. "Distribution and morphometrics of South American dolphins of the genus Sotalia." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61865.

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Groote, Isabelle Elisabeth Peter Maria De. "A Comprehensive Analysis of Long Bone Curvature Using 3D Geometric Morphometrics." Thesis, University College London (University of London), 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505127.

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18

Miglori, Nicole. "Quantifying intraspecific shape variation in the Kangaroo Humerus using geometric morphometrics." Thesis, Miglori, Nicole (2015) Quantifying intraspecific shape variation in the Kangaroo Humerus using geometric morphometrics. Honours thesis, Murdoch University, 2015. https://researchrepository.murdoch.edu.au/id/eprint/30273/.

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Kangaroos exhibit one of the largest variations in body size for any vertebrate, with males being 1.5 times larger in body mass compared to females. Therefore it is assumed that sexual selection plays a major role in the behavioural and physical characteristics of kangaroos. Male and female kangaroos demonstrate marked differences in musculature of the forelimb. I investigated if the humerus (the upper bone of the forearm) of the western grey kangaroo (Marcopus)fuliginosus) displays sexual dimorphic characteristics, and if these characteristics are correlated with muscle mass. 28 landmar

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Tzeuschner, Dominique. "Untersuchung zum Gesichtswachstum von Patienten mit Lippen-Kiefer-Gaumenspalten operiert nach dem Leipziger Konzept zur funktionellen Rehabilitation von Lippen-Kiefer-Gaumenspalten." Doctoral thesis, Universitätsbibliothek Leipzig, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-141025.

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In der vorliegenden Dissertation wurde anhand von 1042 extraoralen Fotos im Profil und en face untersucht, wie sich das Wachstum longitudinal bei 166 gesunden Kindern, je zehn Kindern mit isolierter Gaumenspalte, einseitiger Lippen-Kiefer-Gaumenspalte sowie doppelseitiger Lippen-Kiefer-Gaumenspalte operiert nach dem Leipziger Konzept entwickelt, sowie inwiefern sich die einzelnen Gruppen in verschiedenen Altersstufen voneinander unterscheiden. Dazu wurden pro Gruppe jeweils fünf Jungen und fünf Mädchen kaukasischer Herkunft, geboren in den Jahren 1994 bis 2001, mit einer nichtsyndromalen Spalt

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20

Powell, Matthew G. "Morphometric Characterization of a Mercenaria spp. (Bivalvia) Hybrid Zone: Paleontological and Evolutionary Implications." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/33094.

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Paleontological documentation of hybridization events has the potential to address a multitude of evolutionary and paleobiological issues unanswerable by purely biological means. However, previous studies of modern hybrids suggest that their morphology is often insufficient for their reliable discrimination. This study analyzes the morphology of an extant, genetically-identified <i>Mercenaria</i> spp. (Bivalvia: Veneridae) hybrid zone using Bookstein coordinates and multivariate methods to answer two questions: (1) can hybrid <i>Mercenaria</i> spp. individuals be identified based on morpholo

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21

Jansky, Kyle J. "Identifying Myotis Species Using Geometric Morphometrics and its Implications for the Fossil Record and Conservation." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etd/1145.

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Dentaries of the 6 species of Myotis that occur in the eastern United States were analyzed using landmark-based geometric morphometrics. The species could be distinguished with a high degree of accuracy. Evidence was found of a phylogenetic signal in the morphology of the Neotropical and Nearctic Myotis sub-clades. There is also evidence of convergence in the morphology of the dentary among Myotis species that feed primarily by gleaning. When analyzed together there was no evidence of sexual dimorphism among the 6 eastern U.S. Myotis, but when analyzed individually some dimorphism may be prese

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Robart, Bruce W. Armstrong Joseph E. "The systematics of Pedicularis bracteosa morphometrics, development, pollination ecology, and molecular phylogenetics /." Normal, Ill. Illinois State University, 2000. http://wwwlib.umi.com/cr/ilstu/fullcit?p9986730.

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Thesis (Ph. D.)--Illinois State University, 2000.<br>Title from title page screen, viewed May 9, 2006. Dissertation Committee: Joseph E. Armstrong (chair), Roger Anderson, Angelo Capparella, Christopher Horvath, Diane Byers. Includes bibliographical references (leaves 223-234) and abstract. Also available in print.

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Li, Ping. "Floral morphometrics, development and evolution of homostyly from distyly in Amsinckia (Boraginaceae)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ66635.pdf.

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Leipertz, Steven Lee. "Morphometrics and the evolutionary history of fishes of the teleost subfamily Pleuronectinae /." Thesis, Connect to this title online; UW restricted, 1987. http://hdl.handle.net/1773/5330.

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Tompsett, Scott. "Taxonomy, morphometrics, and phylogeography of the cheilostome bryozoan genus Schizoporella in Europe." Thesis, Aberystwyth University, 2010. http://hdl.handle.net/2160/fe2d54b9-b4c2-4bf2-bcea-e98d897d81f9.

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Cuesta, Torralvo Elisabeth. "Geometric morphometrics and topographic analyses of dental wear in modern human populations." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/673455.

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Dental wear is a natural, complex, physiological process of gradual enamel tissue loss that occurs during an individual’s life span and provides information about dietary habits, food processing techniques and cultural practices. Many studies have characterised dental wear in human populations by using observer-dependent, qualitative methods. In contrast, more objective, quantitative approaches have been scarcely used. This thesis aims to assess differences in molar morphology among modern human populations and the effect of dental wear on shape by using novel quantitative methods, such as the

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Lawrence, Wujek Jessica Danielle. "A fresh look at the genus Ichthyosaurus : species characteristics, morphometrics, and phylogeny." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/418172/.

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Ichthyosaurs are among the best known of Mesozoic marine reptiles, ranging from the Early Triassic (252-247 Ma) to the end of the Cenomanian (93.9 Ma; Fischer et al., 2016). The genus Ichthyosaurus was one of the first genera to be named and is arguably one of the most iconic of ichthyosaurs. Due to this abundance of specimens, and to initial inadequacies in the definition of the genus and its constituent species, Ichthyosaurus has become a waste-basket taxon; a poorly classified taxon with many morphologically variable specimens (Smith and Radley, 2007). Ichthyosaurus is known from an enormou

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Jessee, Lance D., Austin Gause, and Blaine W. Schubert. "Intervertebral Variation of North American Pit Vipers (Squamata, Viperidae) Using Geometric Morphometrics." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/asrf/2019/schedule/95.

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Within Pleistocene cave deposits, snake fossils tend to be relatively common and generally occur as isolated vertebrae. However, the specific, and sometimes generic, identification of isolated snake vertebrae is often hindered by the significant amount of intra- and interspecific variation along the precloacal vertebral column, a subject that has largely been neglected in many fossil snake identifications. Identifications are typically based on the vertebrae of disarticulated modern specimens with preference given to mid-trunk vertebrae. This study utilizes 2-D geometric morphometrics to deter

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Ménard, Josephine Mira. "Investigating craniodental sexual dimorphism in bandicoots and bilbies using 3D geometric morphometrics." Thesis, Ménard, Josephine Mira (2018) Investigating craniodental sexual dimorphism in bandicoots and bilbies using 3D geometric morphometrics. Honours thesis, Murdoch University, 2018. https://researchrepository.murdoch.edu.au/id/eprint/41726/.

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Evolution through natural selection enables species to adapt to their surroundings and optimise themselves for reproduction and survival. Sexual selection, on the other hand, reflects modifications to improve reproductive fitness of individuals within species. Animal morphology, therefore, often represents a compromise between these two selective pressures. Bandicoots and bilbies (Marsupialia; Peramelemorphia) are small to medium sized omnivorous marsupials, of which roughly 30 species inhabit varied habitats throughout Australia and Papua New Guinea. This study sought to quantify crani

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Schaaf, Lisa Nicole. "Comparative Morphometrics of the Sacral Vertebra in Aneides (Caudata: Plethodontidae)." Digital Commons @ East Tennessee State University, 2010. https://dc.etsu.edu/etd/1703.

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The genus Aneides (Caudata: Plethodontidae) is an arboreal salamander with a prehensile tail and a distribution that spans North America. It is hypothesized that adaptations for arboreality will be visible in the osteology of the sacral vertebra either by qualitative analysis or linear and morphometric analysis in comparison with other plethodontid salamanders. This study demonstrates that while qualitative and quantitative analyses are successful at making genus-level distinctions between taxa, identification to lower taxonomic levels remains inconclusive. Linear morphometrics and dorsal Proc

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Surtees, D. P. "Multivariate morphometrics and cytotaxonomy of the West African Simulium damnosum complex (Diptera : Simuliidae)." Thesis, University of Liverpool, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233866.

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Damasceno, Silva Elis. "Quantitative genetics of skull shape in Soay sheep (Ovis aries) using geometric morphometrics." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/quantitative-genetics-of-skull-shape-in-soay-sheep-ovis-aries-using-geometric-morphometrics(8b233fd9-76dc-4dd9-9a38-621548a835ac).html.

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Analysing variation of skull shape in wild populations can give us an insight into evolutionary processes. By looking into patterns of morphological variation within populations, we can extrapolate and make assumptions on the patterns of variation on higher taxonomic levels. In this thesis, I collected data on skull shape of a wild population of Soay sheep using geometric morphometrics methods. I applied a multitude of quantitative genetics and geometric morphometrics methods to explore the factors behind the evolution of skull shape. I analysed several aspects of skull shape, including integr

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Fouefack, Jean-Rassaire. "Geometric morphometrics for 3D dense surface correspondence: population comparisons of shoulder bone morphology." Master's thesis, Faculty of Health Sciences, 2018. http://hdl.handle.net/11427/30024.

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Background: Comparisons in morphological shape/form across population groups could provide population differences that might assist in making decisions on diagnosis and prognosis by the clinician. Geometric morphometrics (GM) is one of the fields that help to provide such population comparisons. In medical imaging and related disciplines, GM is commonly done using annotated landmarks or distances measured from 3D surfaces (consisting of triangular meshes). However, these landmarks may not be sufficient to describe the complete shape. This project aimed to develop GM for analysis that con

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Nwotchouang, Blaise Simplice Talla. "SKULL-BASED MORPHOMETRICS AND BRAIN TISSUE DEFORMATION CHARACTERIZATION OF CHIARI MALFORMATION TYPE I." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1595877233083287.

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Tse, Yuen Ting. "Quantifying the link between craniodental morphology and diet in Soricidae using geometric morphometrics." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1594934856370846.

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Meek, John D. "Ethnic differences in bone morphometrics of the distal humerus: Implications for plate design." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/106916/3/John_Meek_Thesis.pdf.

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The primary aim of the thesis was to investigate the correlation between height and ethnicity on the variation of shape of the distal humerus and to empirically qualify these ethnic differences. This was accomplished by utilising 3D models of bones reconstructed by computerised tomography (CT) scan data from Europe, Japan and Thailand. This information was then utilised to assess and document the implications that stature and ethnic origin have on bone morphology, as it relates to plate design and fracture fixation. The findings of this research project will contribute to the understanding in

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Kaleme, Prince K. "Habitat fragmentation, patterns of diversity and phylogeography of small mammal species in the Albertine rift." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/18110.

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Thesis (PhD) - Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: The Albertine Rift is characterized by a heterogeneous landscape which may, at least in part, drive the exceptional biodiversity found across all taxonomic levels. Notwithstanding the biodiversity and beauty of the region, large areas are poorly understood because of political instability with the inaccessibility of most of the region as a contributing factor. The majority of studies in the Albertine Rift have focussed on charismatic mega fauna, with other taxa receiving less attention. One of the taxonomically and numerica

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Krause, Richard Alan. "Ecological, Evolutionary, and Taphonomic Comparisons of Brachiopods and Bivalves at Multiple Spatial and Temporal Scales." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/27278.

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The fossil record is the primary source of information on the history of life. As such, it is important to understand the limitations of this record. One critical area in which there is still much work to be done is in understanding how the fossil record, and our interpretation of it, may be biased. Herein, the fidelity between the life and death assemblage of an extant brachiopod with respect to morphological variability is studied using geometric morphometrics. The results from several analyses confirm a high degree of morphological variability with little change in mean shape between the l

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Smith, Amy C. "Description of Tanytrachelos ahynis and its implications for the phylogeny of Protorosauria." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/37652.

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Tanytrachelos ahynis, a small (21 cm long) aquatic protorosaur from the Upper Triassic sediments in the Cow Branch Formation of the Newark Supergroup, has been briefly described in 1979 by P. E. Olsen. A growing addition of nearly 200 specimens and the availability of CT imaging allow for an extensively detailed redescription. This redescription fills in missing data in cladistic analyses of Protorosauria, allowing for protorosaur monophyly to be retested with a more robust data set. Two hundred and ninety specimens and two CT scans of specimens were examined, with seventy linear measurements,

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Clutts, Stephanie A. "Systematics of Anguispira (Pulmonata: Discidae) based on molecular and morphometric data." Available to subscribers only, 2008. http://proquest.umi.com/pqdweb?did=1674100491&sid=2&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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Thesis (M.S.)--Southern Illinois University Carbondale, 2008.<br>"Department of Zoology." Keywords: Anguispira, Molecular, Mollusks, Morphometrics, Systematics. Includes bibliographical references (p. 111-115). Also available online.

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Harris, William Henry. "Ontogenesis in the Cranium of Alligator mississippiensis Based on Disarticulated Cranial Elements." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etd/2492.

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The American alligator, Alligator mississippiensis, is a large extant archosaur and member of the Order Crocodilia. Crocodilian ontogeny has been studied in great detail, the skull being of particular interest. One aspect of the skull left unstudied is how individual cranial elements change through ontogeny independent of one another. This study observed morphological change in a growth series of 34 specimens of A. mississippiensis from ETSU Vertebrate Paleontology Lab collections. The premaxilla, maxilla, nasal, jugal, frontal, and parietal were analyzed using landmark morphometrics. The fron

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Foster, Austin Prescott. "Developmental variation and morphological integration between chondrocranial- and intramembranous-derived craniofacial skeletal components in a cross-sectional sample of C57BL6/J and C3H/HeJ mice." Thesis, University of Iowa, 2018. https://ir.uiowa.edu/etd/6103.

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Introduction: Chondrocranial-derived components of the craniofacial skeleton are thought to exert a morphogenetic influence on surrounding intramembranous-derived skeletal structures. In our previous study (Foster and Holton, 2016), we found that the ontogenetic relationship between the nasal septum (derived primarily from the chondrocranium) and surrounding intramembranous-derived facial skeleton was highly variable in BL6 and C3H mice. The purpose of our present study was to examine samples of BL6 and C3H mice from 3 to 15 weeks of age to determine whether the variable interaction noted prev

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Drumheller-Horton, Stephanie Katarina. "An actualistic and phylogenetic approach to identifying and interpreting crocodylian bite marks." Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/3446.

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Bite marks provide direct evidence of trophic interactions, feeding behavior, and inter- or intraspecific conflict in the fossil record. However, their utility as a source of taphonomic and paleoecologic data requires differentiation from traces left by other processes. Since the 19th century, taphonomists have often relied on actualistic observations of modern bite marks and feeding behaviors in order to identify diagnostic traces and patterns. A recent increase in interest in taphonomic research has resulted in a large body of work describing patterns of bite marks from many different clades

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Cossette, Adam Patrick. "The early history of character evolution in alligatoroids." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6397.

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This project seeks to explore, name, and describe some of the earliest known members of Alligatoroidea. Explorations of Bottosaurus harlani and Deinosuchus reveal that early in their evolutionary history alligatoroids had attained bauplans that are highly divergent from the ancestral condition in both body size and morphology. Bottosaurus harlani preserves aspects of the skull table – including constricted supratemporal fenestrae, a linear frontoparietal suture, and a large trapezoidal dorsal supraoccipital exposure – that are similar to those of caimans. Optimal trees from phylogenetic analys

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Camp, Jessica Amber. "Morphological variation and disparity in Lystrosaurus (Therapsida: Dicynodontia)." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/650.

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The dicynodont genus Lystrosaurus, a relative of the Kannemeyerids, is one of few terrestrial vertebrate genera which can be found on both sides of the Permian-Triassic (P-T) boundary (Botha and Smith, 2006); indeed, a single species, Lystrosaurus curvatus, is known from both periods. In the Permian, Lystrosaurus was of average abundance relative to other genera. Shortly following the P-T extinction, it drastically increased in abundance until it dominated the faunas it was present in (Botha and Smith, 2006). To date, Lystrosaurus fossils have been found in South Africa, India, Antarctica, Chi

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Dunn, Shanna K. "Analyzing Spatial Patterns in Reefscape Ecology Via Remote Sensing, Benthic Habitat Mapping, and Morphometrics." NSUWorks, 2009. http://nsuworks.nova.edu/occ_stuetd/234.

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A growing number of scientists are investigating applications of landscape ecology principles to marine studies, yet few coral reef scientists have examined spatial patterns across entire reefscapes with a holistic ecosystem-based view. This study was an effort to better understand reefscape ecology by quantitatively assessing spatial structures and habitat arrangements using remote sensing and geographic information systems (GIS). Quantifying recurring patterns in reef systems has implications for improving the efficiency of mapping efforts and lowering costs associated with collecting field

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van, Heteren Anna Helena. "Masticatory adaptations of extant and extinct Ursidae : an assessment using three-dimensional geometric morphometrics." Thesis, University of Roehampton, 2012. https://pure.roehampton.ac.uk/portal/en/studentthesis/masticatory-adaptations-of-extant-and-extinct-ursidae(a636d685-de0b-43f8-8438-7ef0e5c2a9f6).html.

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The diet of Pleistocene cave bears (Ursus spelaeus, U. deningeri) is debated extensively. Traditionally, cave bears were thought to be herbivorous, but more recent studies have proposed that they were more omnivorous. To test this, their skull morphology and that of their confamilials were analysed using 3D geometric morphometrics. The eight extant Ursidae occupy various dietary niches, which are expected to affect the functional morphology of the skull; the resulting dietary morphospace is used to determine the position of cave bears. Landmarks for 3D digitisation were chosen to reflect funct

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Gold, Maria Eugenia Leone. "Cranial osteology and braincase morphometrics of Gavialis gangeticus: implications for crocodylian phylogenetics." University of Iowa, 2011. http://ir.uiowa.edu/etd/2428.

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Olpinski, Stanislaw Christopher. "Breeding ecology, habitat and morphometrics of Rock Ptarmigan Lagopus mutus L. in Nouveau-Québec." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65370.

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Papageorgiou, Theofania. "Image analysis and multivariate morphometrics as means of distingushing between apple varieties and clones." Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267281.

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