Terræ ARTIGO DOI - 10.20396/td.v13i2.8650100 Didatica Evolução dos Toxodontia da América do Sul durante o Cenozoico: aspectos dentários, paleoclimáticos e paleoambientais EVOLUTION OF TOXODONTIA FROM SOUTH AMERICA DURING THE CENOZOIC: DENTAL, PALEOCLIMATIC AND PALEOENVIRONMENTAL ASPECTS PATRÍCIA RODRIGUES BRAUNN1 & ANA MARIA RIBEIRO1, 2 1- Univ. Fed. do Rio Grande do Sul, Prog. de Pós Grad. em Geociências, Porto Alegre, RS, Brasil. -
[email protected] 2- Museu de Ciências Naturais, Fund. Zoobotânica do RS. (MCN/FZBRS), Porto Alegre, RS, Brasil. -
[email protected] ABSTRACT: The notoungulates are native South American ungulates recorded from Manuscrito: the Paleocene to the Pleistocene, and whose diversity declined dramatically during Recebido:24/08/2016 the Pliocene, reaching Central America and North America during the Pleistocene. Corrigido: 25/06/2017 Notoungulates evolved under climatic and environmental influence, from archaic Aceito: 19/07/2017 lineages, with generalized masticatory apparatus, with complete dentition, without diastema, and with brachydont premolars and molars, to specialized forms with Citation: Braunn P. R. & Ribeiro A. M. 2017. hypertrophied incisors, simplified occlusal crown patterns and protohypsodont and Evolução dos Toxodontia da América do Sul durante euhypsodont forms. These communities lived first in warm and humid forest habitats, o Cenozoico: aspectos dentários, paleoclimáticos e and later, in relatively temperate grasslands in open habitats with a strong tendency paleoambientais. Terræ Didatica,