Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Life Sciences
Evolution And Biogeography Of Mesoamerican Small Mammals: With Focus On The Genus Handleyomys And Related Taxa, Ana Villalba Almendra
Evolution And Biogeography Of Mesoamerican Small Mammals: With Focus On The Genus Handleyomys And Related Taxa, Ana Villalba Almendra
Theses and Dissertations
Mesoamerica is considered a biodiversity hot spot with levels of endemism and species diversity likely underestimated. For mammals, the patterns of diversification of Mesoamerican taxa still are controversial. Reasons for this include the region's complex geologic history, and the relatively recent timing of such geological events. Previous studies, however, support the view that substantial migration between North (NA) and South America (SA) occurred prior or/and during the Great American Biotic Interchange (GABI) ~3.5 Ma. This was followed by repeated periods of isolation during Pleistocene climatic oscillations, which produced most of the diversification in the region. From a North American origin, …