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In modern mammalian terrestrial ecosystems, herbivores tend to be larger than carnivores. I explored the history of the relationship between these intrinsic biological characters by analyzing trends in body size and diet for Permian and Triassic Synapsida, the dominant terrestrial vertebrates during that time. This work exhibits the ability of mass extinctions to disrupt size distributions of ... read moreherbivores and carnivores, which impacts ecosystem function. Focusing on the role of the Permian-Triassic extinction event and recovery in changing the relationships between body size and diet, I employed a logistic regression to measure the extinction and origination selectivity of 320 synapsid genera. Complementary to this selectivity analysis, I aimed to measure shifts in morphology and body size in therapsids across the Permian-Triassic interval.read less
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