Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"archosaur"”.
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Evolution in biological radiations; insights from the Triassic archosaur radiation
… ideal fossil clade to test this question is the Archosauriformes (crocodylians, birds, and their closest relatives). Archosauriforms radiated following the end-Permian mass extinction and their lineage diversification through the Early to Late Triassic is well documented in the literature. Prior …
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Intervertebral Articulation and the Evolution of Large Body Size in Archosauria
… including body size trends. The reptile group Archosauria encompasses living and extinct birds and crocodylians as well as non-avian dinosaurs and crocodile relatives called pseudosuchians. My research focuses on studying fossils of extinct archosaurs to determine how the morphology of their …
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Ontogeny within a convergent evolutionary context
… clade of large, longirostrine, semi-aquatic archosaur-relatives whose overall morphologies were later converged upon by crocodylians, but the processes that shaped that convergence remain understudied. My PhD dissertation aims to conduct a detailed qualitative and quantitative study of …
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Evaluation of tridactyl theropod tracks in southern Africa: quantitative morphometric analysis across the Triassic–Jurassic boundary
… event (ETE), marking a key period in archosaur history. In southern Africa, the Triassic–Jurassic Boundary (TJB) is contained in the richly fossiliferous, fluvio-lacustrine-aeolian Upper Triassic to Lower Jurassic strata of the Stormberg Group. More specifically, the middle Norian – …
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Critical assessment of a proposed biostratigraphic scheme for Late Triassic fissure sediments from South West England
Questions as to the tempo and mode of changes in faunal composition at the Triassic/Jurassic boundary remain unanswered. Inquiries are hampered by a general paucity of sections containing correlatable Late Triassic/Early Jurassic strata. Vertebrate fossil material from Cromhall Quarry, recovered as …
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Quantifying variation in teeth of Late Triassic vertebrates: implications for identification, palaeoecology, and biostratigraphy
… of convergence with little variation among many archosaur teeth in the Triassic Period. Different methods have been used to quantify variation and identify isolated teeth, particularly within Dinosauria, but 3D methods have been underutilised, despite the increasing availability of scanned …