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vol.76 número1Apoptotic cell and phagocyte interplay: recognition and consequences in different cell systemsPermian plants from the Chutani Formation (Titicaca Group, Northern Altiplano of Bolivia): II. The morphogenus Glossopteris índice de autoresíndice de assuntospesquisa de artigos
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Anais da Academia Brasileira de Ciências

versão impressa ISSN 0001-3765versão On-line ISSN 1678-2690

Resumo

VIEIRA, Carlos E. L. et al. Permian plants from the Chutani Formation (Titicaca Group, Northern Altiplano of Bolivia): I. Genera Pecopteris and Asterotheca. An. Acad. Bras. Ciênc. [online]. 2004, vol.76, n.1, pp.117-128. ISSN 0001-3765.  http://dx.doi.org/10.1590/S0001-37652004000100010.

Fossil plants belonging to the morphogenera Glossopteris, Pecopteris and Asterotheca were collected from the upper part of the Chutani Formation (Titicaca Group), near the town of San Pablo de Tiquina, on the southeastern shore of Lake Titicaca (northern Altiplano, Bolivia). Here we report the analysis of fern-type foliage found at this location. Three species of pecopterid fronds are identified: Pecopteris dolianitii Rohn and Rösler, P. cf. P. cadeadensis Rohn and Rösler, and P. cf. P. pedrasica Read. All these species are typically found in Permian deposits of the Paraná Basin in southern Brazil. Despite the poor preservation of the material, a fertile specimen could be studied and was determined as Asterotheca sp. The paleoenvironmental and paleoecological implications of this new find are briefly analyzed.

Palavras-chave : Altiplano of Bolivia; Permian; Pecopteris; Asterotheca.

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