E-Dissertationen: Browsing E-Dissertationen by Author "Sander, Martin P."
Now showing items 1-20 of 21
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Bone histology and growth of the prosauropod dinosaur Plateosaurus engelhardti MEYER, 1837 from the Norian bonebeds of Trossingen (Germany) and Frick (Switzerland)
Klein, Nicole (2005)Predominately long- and flat bones of the prosauropod <i>Plateosaurus engelhardti</i> from the Norian localities of Trossingen and Frick were sampled for paleohistological study. Both localities yield rich material of adult ... -
Comparative bone histology of the turtle shell (carapace and plastron): implications for turtle systematics, functional morphology and turtle origins
Scheyer, Torsten Michael (2007)The bone histology of the turtle shell is valuable for addressing osteoderm and shell formation, reconstruction of fossil integumentary soft-tissue structures, phylogenetic hypotheses and functional aspects of the turtle ... -
Cortical bone remodeling in Amniota: a functional, evolutionary and comparative perspective of secondary osteons
Mitchell, Jessica (2017-05-15)In this dissertation, contributions to understanding the formation, function and evolution of secondary osteons are presented. By using comparative methods and including fossil taxa, new insights are developed. I analyze ... -
Estimating sauropod body mass and gait: by the analysis of recent and fossil tetrapod tracks with photogrammetry and soil mechanics
Läbe, Sashima (2017-08-15)This dissertation presents an analysis of recent and fossil tracks with quantitative and in-terdisciplinary methods for estimating the body mass and locomotion of a sauropod trackmaker. By employing methods from natural ... -
Functional analysis of molars in “symmetrodontan” mammals
Plogschties, Thorsten (2020-03-10)The “symmetrodontan” molar pattern is characterized by triangulation of the main cusps in combination with a reversed-triangle occlusion. In the fossil record, the “symmetrodontan” molar pattern occurred in various taxa ... -
Funktionale Analyse von Fledertier-Gebissen (Chiroptera)
Hielscher, Romina Christin (2018-04-13)Fledertiere (Mammalia: Chiroptera) sind mit ungefähr 1200 Arten in 18 Familien die zweitgrößte Säugetierordnung nach den Nagetieren und die einzige, die zum aktiven Flug fähig ist. Sie sind nahezu weltweit verbreitet und ... -
Funktionelle Morphologie und Abnutzungsmuster prätribosphenischer Molaren am Beispiel der Dryolestida (Mammalia, Cladotheria)
Schultz, Julia A. (2012-03-09)Für die Dryolestida, primitive mesozoische Säugetiere, sind die mesiodistal verkürzten und buccolingual verbreiterten Molaren in Ober- und Unterkiefer kennzeichnend. Die Molaren sind in Form von alternierenden Dreiecken ... -
Hierarchical structure and diagenesis of Sauropod long bones using advanced characterization techniques
Dumont, Maïtena (2013-03-04)Sauropod dinosaurs are one of the most fascinating animals, mainly because of the extreme size that they could reach. This gigantism led to the hypothesis that sauropod long bones adopted an optimized hierarchical structure ... -
Identification, Distribution, and Function of Gastroliths in Dinosaurs and Extant Birds with Emphasis on Ostriches (Struthio camelus)
Wings, Oliver (2004)Gastroliths (stomach stones) are known from many extinct and extant vertebrate clades and are potentially useful for paleobiological interpretations. This dissertation investigates the identification, function, distribution, ... -
Long bone histology of basalmost and derived Sauropodomorpha: the convergence of fibrolamellar bone and the evolution of giantism and nanism
Stein, Koen Hendrik Willy (2012-01-11)This study reports on long bone histology and growth in sauropodomorph dinosaurs. Derived members of Sauropodomorpha, the sauropods, were the largest terrestrial animals our planet has ever seen. New methods have recently ... -
Molar dentition of the docodontan Haldanodon (Mammaliaformes) as functional analog to tribosphenic teeth
Brinkkötter, Janka J. (2019-06-18)All extant mammals save the monotremes descend from an ancestor with tribosphenic tooth morphology, characterized by a distally situated crushing basin (talonid basin) on the lower and an interlocking cusp (protocone) on ... -
Objective and quantitative methods in the study of dinosaur tracks
Lallensack, Jens Nikolaus (2019-02-05)This dissertation develops and employs objective and quantitative methods for the analysis of dinosaur tracks. Tracks are—besides the familiar bones and teeth—a crucial data source for inferences on dinosaur biology and ... -
Origins of Endothermy in the Mammalian Lineage: the Evolutionary Beginning of Fibro-lamellar Bone in the “Mammal-Like” Reptiles
Shelton, Christen Don (2015-07-07)This study reports on long bone histology of the pelycosaurs, and proposes the hypothesis that the presence of fibro-lamellar bone (FLB) and high growth rates were already present in the basal most synapsids during the ... -
Patterns of life history recorded in the dorsal rib histology of amniotes: and their implications for body size evolution and ecology of sauropod dinosaurs
Waskow, Katja (2019-06-06)Dorsal ribs of tetrapods for centuries have never been in focus of scientific interest in any of the main areas of research in biology or paleontology. However, new insights into rib inner structures reveal the importance ... -
Phylogenetische und funktionsmorphologische Untersuchungen der Ohrregion bei Sciuromorpha (Rodentia, Mammalia)
Schwarz, Cathrin (2012-08-31)Die Auris media der Rodentia zeichnet sich durch knöcherne Septen innerhalb des Recessus epitympanicus und des Cavum tympani aus. Diese können mit der 'Septenuhr' und der 'Septengleichung', welche in dieser Studie entwickelt ... -
The plesiosaur: remarkable morphology, histology, and physiology
Wintrich, Tanja (2019-07-04)In this dissertation, contributions to understanding the morphology, histology, and physiology of plesiosaurs, a major group of marine reptiles from the Age of Dinosaurs, are presented. By using comparative methods and new ... -
The reproductive biology of Cretaceous oviraptorid dinosaurs and its implication for the origin of bird reproduction
Yang, Tzu-Ruei (2018-11-13)This dissertation aims to pioneer an integrative approach that includes all lines of evidence to comprehensively and in detail reconstruct the biology of an extinct animal. Specifically, the dissertation consists of several ... -
Taphonomie des Howe Quarry’s (Morrison-Formation, Oberer Jura), Bighorn County, Wyoming, USA
Michelis, Ioannis (2004)Der Howe Quarry in Nordwyoming dokumentiert ein Massenvorkommen an Sauropoden der Morrison Formation (Oberer Jura, Kimmeridgium-Tithonium). Das Ziel dieser Arbeit ist Antworten zur Paläobiologie der Sauropoden durch Studium ... -
Theropod dinosaurs from Thailand and Southeast Asia: phylogeny, evolution, and paleobiogeography
Samathi, Adun (2019-10-23)Southeast Asia played an important role in dinosaur study during the Late Jurassic to mid-Cretaceous. Thailand is roughly in the third place in dinosaur discovery in Asia, after China and Mongolia. Nevertheless, there are ... -
The Uncinate Processes in Birds and their Implications for the Breathing Mechanics of Maniraptoran Dinosaurs
Codd, Jonathan Richard (2004)The breathing mechanics of dinosaurs and the connected implications for lung structure (Perry 1983) and metabolism is currently a focus of intense and sometimes controversial discussion (Perry in press). Rubens et al (1997) ...