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Annonaceae e Lauraceae da Formação Entre-Córregos ( Paleógeno ) na Bacia de Aiuruoca: implicações paleoclimáticas

2004; Volume: 7; Issue: 2 Linguagem: Inglês

10.4072/rbp.2004.2.04

2236-1715

Silvia Franco-Delgado,

Fish biology, ecology, and behavior

PALEOCLIMATICAL IMPLICATIONS.The Brazilian Paleogene taphofloras occur preferentially in the interior sedimentary basins related to the Mesozoic-Cenozoic continental rift.The Aiuruoca Basin, located in the Minas Gerais State near the boundaries with the states of São Paulo and Rio de Janeiro, is this kind of basin.In Aiuruoca basin, Annona sp and Nectandra sp. were identified among the foliar material as carbonization and impressions on papyraceous shales of the Entre-Córregos Formation, cropping out at the homonymous creek margin.Based on palynological dates, this taphoflora has been dated as Eocene-Oligocene.The presence of the genera Annona and Nectandra in this taphoflora is a strong evidence for dominance of the Atlantic Rain Forest, with at least two strata in that area during the Paleogene.