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Revista chilena de historia natural

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LEPPE, MARCELO  and  MOISAN, PHILIPPE. New records of Upper Triassic Cycadales and Cycadeoidales of Biobío river, Chile. Rev. chil. hist. nat. [online]. 2003, vol.76, n.3, pp.475-484. ISSN 0716-078X.

A contribution to the knowledge of Cycadales and Cycadeoidales present in the Upper Triassic of the Santa Juana Formation (Carnian-Raetian) in the Bio-Bío Region of Chile is provided. The groups are represented by the species Pseudoctenis longipinnata Anderson & Anderson, Pseudoctenis spatulata Du Toit and Pterophyllum azcaratei Herbst & Troncoso. A new species Pseudoctenis truncata nov. sp. is described. They appear to be related to other typical elements of the paleofloristic assamblages from the south-occidental border of Gondwanaland.

Keywords : Upper Triassic; paleobotany.

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