Stratigraphical distribution of taeniate pollen grains in the Upper Palaeozoic basins of South America. Un update.

DI PASQUO, MARÍA DE LAS MERCEDES

Porto Alegre

Otro; Conferencia invitada; 2005

Departamento de Paleontologia e Estratigrafia, UFRGS

This contribution aims to update the stratigraphical distribution of taeniate pollen grains (TE) along the Late Carboniferous (LC) and Early Permian (EP) of South America (SA) and recognize key species with stratigraphic value. Knowledge of LC and EP SA microfloras has expanded significantly during the past five years, specially as a result of detailed investigations in Argentina [Tarija (T), Paganzo (P), Uspallata-Iglesia (UI), San Rafael (SR), Chacoparaná (CH), Colorado (CO) and Tepuel-Genoa (TG) Basins], Brazil [Paraná (PA), Amazon (A) and Parnaíba (PR) Basins], Uruguay (Paraná/Chacoparaná Basin), Bolivia [Tarija and Madre de Dios (MD) Basins] and Peru (Madre de Dios Basin). Several biostratigraphic units and correlations have been proposed covering almost all these basins where the assemblages typically contain variable