Overview: Addresses the biotic and abiotic factors that provide a context for metatherian evolution in South America throughout the Cenozoic Era.Discusses the physiological constraints of living marsupials and .This book summarizes major aspects of the evolution of South American metatherians, including their epistemologic, phylogenetic, biogeographic, faunal, tectonic, paleoclimatic, and metabolic contexts. A brief overview of the evolution of each major South American lineage ("Ameridelphia", Sparassodonta, Didelphimorphia, Paucituberculata, Microbiotheria, and Polydolopimorphia) is provided
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