Revista Chilena de Historia Natural 76 (3): 475-484, 2003
RESEARCH ARTICLE
New records of Upper Triassic Cycadales and Cycadeoidales of Biobío river,
Chile
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.
Key words:
Upper Triassic,
paleobotany, Cycadales, Cycadeoidales
