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.
Results
Showing 1 to 6 of 6 for “"morphological disparity"”.
-
Changes in morphological disparity in eutherian mammals across the K-Pg boundary and Palaeocene-Eocene Thermal Maximum using discrete morphofunctional characters
… insectivorous, showing relatively limited morphological disparity. After it, during Palaeogene, there was a major increase in eutherian disparity, with a much wider range of body sizes and ecomorphologies (including specialized herbivores and carnivores) appearing in the fossil record, …
-
Evolution in biological radiations; insights from the Triassic archosaur radiation
… questions, such as, is ecological and morphological diversification simultaneous? An 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 …
-
Trends in Eukaryote Body Size in an Ecological and Evolutionary Context
… study addressed the history of body size and morphological disparity of the first 1.3 billion years of acritarch history. The results reject the idea that acritarch body size increased monotonically through the Proterozoic; in fact they displayed non-directional fluctuation. Acritarch body …
-
Contributions to the Proterozoic and Cambrian Evolution of Eukaryotes
… macroalgae. The analysis reveals that morphological disparity of Paleoproterozoic macroalgae was low but increased in the Mesoproterozoic and Ediacaran, with a plateau in between. There was also a significant increase in thallus surface/volume ratio and maximum canopy height of the …
-
Phylogeny of the Polyneopterous Insects With Emphasis on Plecoptera: Molecular and Morpological Evidence
… Asia. This placement coupled with the morphological disparity of the two groups validates the creation of a new order for Mantophasmatodea. Our results also suggest the Direct Optimization (formerly Optimization Alignment) produces alignments that are more predictable across the …
-
The role of modularity and integration in shaping primate pelvic girdle evolution
… (the organisation of integrated units) on the morphological evolution of the primate pelvis. The concepts of integration and modularity are core tenets of evolutionary biology, yet their evolutionary role remains poorly understood. In this thesis, I quantified primate pelvis morphological …