A Brief History of South American Metatherians: Evolutionary by Francisco J. Goin, Michael O. Woodburne, Ana Natalia Zimicz,

By Francisco J. Goin, Michael O. Woodburne, Ana Natalia Zimicz, Gabriel M. Martin, Laura Chornogubsky

This e-book summarizes significant elements of the evolution of South American metatherians, together with their epistemologic, phylogenetic, biogeographic, faunal, tectonic, paleoclimatic, and metabolic contexts. a short evaluate of the evolution of every significant South American lineage ("Ameridelphia", Sparassodonta, Didelphimorphia, Paucituberculata, Microbiotheria, and Polydolopimorphia) is supplied. it truly is argued that because of physiological constraints, metatherian evolution heavily the stipulations imposed by means of worldwide temperatures. ordinarily phrases, throughout the Paleocene and the early Eocene a number of radiations of metatherian lineages happened, with many adaptive forms exploiting insectivorous, frugivorous, and omnivorous adaptive zones. In flip, a mix of generalized and really expert forms, the latter as a rule exploiting carnivorous and granivorous-folivorous adaptive zones, characterised the second one half the Cenozoic. In either sessions, weather was once the severe motive force in their radiation and turnovers.

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Ameghino 1882, 1884, 1885, 1888, 1889, 1891a, b, c, 1893a, b, c, 1898, 1900, 1900-1903, 1902a, b, 1904, 1906, 1907, 1908, 1910). Other researchers involved in such studies were Burmeister (1879), Winge (1893), Mercerat (1898), Sinclair (1906), Rovereto (1914), Frenguelli (1921), Cabrera (1927, 1928). 2 Second Period (1930–1977) Since the beginnings of the third decade of last century, South American paleomammalogy greatly benefited from the contributions of several North American scientists, most notably from one in particular: George Gaylord Simpson (1902–1984).

Phylogenetic and palaeobiologic implications. Géodiversitas 20:19–142 de Muizon C, Céspedes R (in press) The beginning of the age of therian mammals in South America: Tiupampa, a transition between Northern and Southern worlds in the basal Paleocene. In: Rosenberger AL, Tejedor MF (eds) Origins and evolution of Cenozoic South American mammals. Springer, New York de Muizon C, Cifelli RL (2001) A new basal “didelphoid” (Marsupialia, Mammalia) from the early Paleocene of Tiupampa (Bolivia). J Vert Paleontol 21:87–97 de Paula Couto C (1952a) Fossil mammals from the begining of the Cenozoic in Brazil.

South American marsupials make a complete use of the habitat available to them and have a broad, generally opportunistic and omnivorous diet. These adaptations, combined with a general small size, small energy expenditure on foraging and other daily activities, limit their distribution. , temperate and temperate-cold climates) due to several environmental limitations. J. 1 Introduction Our knowledge of the natural history of South American living metatherians is still very incomplete, despite a long history since their discovery (Hershkovitz 1987).

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