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Revista mexicana de ciencias geológicas
versión On-line ISSN 2007-2902versión impresa ISSN 1026-8774
Resumen
ARCE, Federico Exequiel y ALICIA ISABEL, Lutz. Fructifications from the Upper Triassic Los Rastros Formation, San Juan province, Argentina. Rev. mex. cienc. geol [online]. 2010, vol.27, n.1, pp.31-42. ISSN 2007-2902.
This paper is a contribution to the study of little known Triassic fructifications from Argentina and elsewhere in Gondwana. Specimens are from the early Late Triassic Los Rastros Formation of the San Juan province. The studied taxa belong to the Pteridospermophyta, genera Umkomasia and Peltaspermum as well as Andersonia rastroensis new genus and species; Pinophyta, with the genus Telemachus of the Voltziaceae and the genus Matatiella of uncertain affinities. Comparisons with other Gondwana floras are given as well as discussions on certain taxonomical aspects.
Palabras llave : Paleobotany; fructifications; Los Rastros Formation; Triassic; San Juan; Argentina.