REVISIÓN DE ASTEROTHECA GOLONDRINENSIS HERBST, HELECHO PÉRMICO DE PATAGONIA, ARGENTINA

Authors

  • Sergio Archangelsky CONICET. División Paleobotánica, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Buenos Aires.
  • Silvia Césari CONICET. División Paleobotánica, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Buenos Aires. Departamento de Geología, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires.
  • Néstor R. Cúneo CONICET. Museo Paleontológico Egidio Feruglio, Trelew.

Abstract

New specimens of Asterotheca golondrinensis Herbst found in the type area (Bajo de La Leona, Santa Cruz province) and in the Tepuel-Genoa Basin (Chubut province), allow a new definition of pinnular characters (margins are shown to be toothed). This type of morphology resembles Nemejcopteris pinnules, but the fructification is more similar to Asterotheca. The Patagonian specimens resemble African (Zimbabwe) material determined as Pecopteris arcuata Halle. The stratigraphic distribution of A. golondrinensis is Early Permian in Chubut and Late Permian in Santa Cruz.

KEY WORDS. Permian. Argentina. Patagonia. Ferns.

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Published

2010-10-01

Issue

Vol. 6 No. 1 (1999)

Section

Thematic Volume

License

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