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Dissertations / Theses on the topic 'Ornithischia'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 July 2025

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1

Spencer, Marc Richard. "A Phylogenetic Analysis of the Basal Ornithischia (Reptilia, Dinosauria)." Bowling Green State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1185914798.

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2

Maidment, Susannah Catherine Rose. "Systematics and phylogeny of Stegosauria (Dinosauria: Ornithischia)." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613251.

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3

Parish, Jolyon C. "The evolution and palaeobiology of the armoured dinosaurs (Ornithischia: Ankylosauria)." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419324.

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4

Spencer, Marc Richard. "Phylogenetic and Biogeographic Assessment of Ornithischian Diversity Throughout the Mesozoic: A Species-Level Analysis from Origin to Extinction." Diss., University of Iowa, 2013. https://ir.uiowa.edu/etd/4915.

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Ornithischian dinosaurs form a diverse, globally-distributed clade including the dominant large land herbivores in many Mesozoic faunas. However, because we lack a well-resolved species-level phylogeny including basal and derived members, our understanding of the initial ornithischian radiation in the Late Triassic is unclear, which further complicates our ability to test biogeographic scenarios. A new species-level phylogenetic analysis, based on comprehensive empirical assessments of a wide sample of ornithischians with an emphasis
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5

Knoll, Fabien. "Les Fabrosauridae Galton, 1972 (Dinosauria : Ornithischia) : répartition géographique et stratigraphique ; systématique et phylogénie." Paris, Muséum national d'histoire naturelle, 2002. http://www.theses.fr/2002MNHN0012.

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L'holotype de Fabrosaurus australis (Hettangien, Lesotho), MNHN LES 9, ne permet pas de donner une diagnose discriminante au niveau spécifique. Fabrosaurus australis est donc considéré comme un nomen dubium, MNHN LES 9 étant rapporté, sans certitude, à un Ornithischia indet. Lesothosaurus diagnosticus (Hettangien, Lesotho et Afrique du sud) est le premier taxon nominal applicable ayant été classé dans les FABROSAURIDAE sans qu'il soit possible, en toute rigueur, de le ranger dans une famille nommée antérieurement. Dans ces conditions, le taxon nominal FABROSAURIDAE Galton, 1972 échoit légitime
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6

Lauters, Pascaline. "Structure générale et évolution du cerveau chez les dinosaures ornithischiens." Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209390.

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Parmi les dinosaures, le clade des Ornithopodes est l’un de ceux qui a rencontré le plus de succès. Apparus au Jurassique supérieur, le groupe s’est dispersé et diversifié jusqu’à sa disparition à la fin du Crétacé. Je me suis attachée à étudier le cerveau des Ornithopodes d’Europe et d’Asie, à établir des comparaisons avec les autres archosaures et de nouveaux arbres phylogénétiques incluant des caractères issus de l’endocrâne. Pour ce faire, des moulages et des reconstitutions à partir de données CT-scan ont été réalisées pour étudier la cavité endocrânienne de divers membres de ce groupe. J
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7

Chabli, Souad. "Etude anatomique et systematique de gravisaurus tenerensis n. G. N. Sp. Dinosaurien, ornithischien) du gisement de gadoufaoua (aptien du niger)." Paris 7, 1988. http://www.theses.fr/1988PA077030.

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Description d'un nouveau genre et d'une nouvelle espece d'iguanodontide en provenance du gisement de gadoufaoua. L'etude osteologique et biometrique, l'analyse et la reconstitution de la musculature pelvienne indiquent qu'il s'agit du premier ornithopode quadrupede franc actuellement connu. On precise sa phylogenie. On le compare avec les autres ornithopodes. L'interpretation des rapports biometriques concernant le squelette appendiculaire, bien que delicate, permet de differencier certains groupes. On analyse la position systematique du nouveau taxon ce qui nous amene a declarer lesothosaurus
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8

Baron, Matthew Grant. "The origin and early evolution of the Dinosauria." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/271890.

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For 130 years dinosaurs have been divided into two distinct clades – Ornithischia and Saurischia. This dissertation looks at the earliest evolution of the clade Dinosauria by focusing upon the interrelationships of the major subsidiary clades within it. It does this following examination, comparison and description of early dinosaur material, and by utilising modern phylogenetic analysis techniques, to rigorously and objectively test the fundamental groupings within the clade Dinosauria using a newly compiled dataset of early dinosaurs and other dinosauromorphs (= close dinosaur relatives). Th
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9

Williams, Vincent Stanley. "Tooth microwear, diet and feeding in ornithischian dinosaurs." Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/10308.

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Understanding the feeding mechanisms and diet of ornithopod dinosaurs is fundamental to understanding their role in Late Cretaceous ecosystems. Current hypotheses of feeding behaviour are based on functional morphology, and testing these is problematic. Microscopic scratches, microwear, that form on teeth in vivo during feeding are known to record the relative movement of the tooth rows and to capture evidence of tooth-food interactions; however, their applicability to ornithischian dinosaurs has not been tested. The development of a fast non-abrasive and residue free method for the removal of
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10

Butler, R. J. "The phylogeny and early evolution of the ornithischian dinosaurs." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597179.

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The Elliot Formation of South Africa and Lesotho contains one of the most important but relatively understudied, early ornithischian faunas; here a review is presented of its known ‘fabrosaurid’ (non-heterodontosaurid) specimens. The first ornithischian collected from the Lower Elliot Formation (Late Triassic) is described, representing a new taxon of basal ornithischian. Within the Upper Elliot Formation (Early Jurassic), ‘<i>Fabrosaurus australis’</i> is considered a <i>nomen dubium, </i>a new diagnosis of <i>Lesothosaurus diagnosticus</i> is presented, and a new taxon, <i>Stormbergia danger
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11

Chabli, Souad. "Etude anatomique et systématique de Gravisaurus tenerensis n.g.n.sp. (Dinosaurien, Ornithischien) du gisement de Gadoufaoua (Aptien du Niger)." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37612575b.

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12

Evans, David Christopher. "Ontogeny and evolution of Lambeosaurine dinosaurs (Ornithischia: Hadrosauridae)." 2007. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=478990&T=F.

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13

Burns, Michael. "External and internal structure of ankylosaur (Dinosauria; Ornithischia) osteoderms." Master's thesis, 2010. http://hdl.handle.net/10048/1295.

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Here I assess the use of osteoderms in systematics with comparative material from fossil and extant tetrapod taxa. Putative differences among three groups (ankylosaurid, nodosaurid, and polacanthid) were evaluated. Archosaur osteoderms have cortices surrounding a cancellous core. Ankylosaurs are united by a superficial cortex distinguishable from the core, lack of Sharpeys fibers, and mineralized structural fibers. Nododsaurids lack a deep cortex and have dense superficial cortical fibres. Ankylosaurid osteoderms are thinner than those of other ankylosaurs. Polacanthids (and some nodosaurids a
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14

Ott, Christopher J. "Leptoceratops (dinosauria; ornithischia) from the Hell Creek formation (cretaceous; maastrichtian) of eastern Montana." 2002. http://catalog.hathitrust.org/api/volumes/oclc/51561362.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2002.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 111-119).
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15

Boyd, Clint Aaroen. "Taxonomic revision of latest Cretaceous North american basal neonithischian taxa and a phylogenetic analysis of basal ornithischian relationships." 2012. http://hdl.handle.net/2152/22088.

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The systematic relationships of basal ornithischian dinosaurs remain contentious, especially the position of basal neornithischians (i.e., ‘hypsilophodontids’). Prior analyses of basal ornithischian relationships have been hampered by the fact that the hypodigm material of many basal neornithischian taxa is fragmentary, denying access to character data crucial to resolving their relationships. The recent discovery of several new basal neornithischian taxa and the referral of more complete specimens to known taxa provide important new data pertinent to resolving these relationships. The results
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