Guavirá, a new locality with fossil woods from the Upper Permian Tacuary Formation of Paraguay

Authors

  • Valeria Leiva Verón Centro de Ecología Aplicada (CECOAL- CONICET y Universidad Nacional del Nordeste). Ruta 5 km 2.5, Corrientes, Argentina
  • Alexandra Crisafulli Centro de Ecología Aplicada (CECOAL- CONICET y Universidad Nacional del Nordeste). Ruta 5 km 2.5, Corrientes, Argentina
  • Rafael Herbst Instituto Superior de Correlación Geológica (INSUGEO- CONICET). Las Piedras 201, 7º/B, 4000 San Miguel de Tucumán, Argentina
  • Víctor Filippi Facultad de Ciencias Naturales, Universidad Nacional de Asunción (FACEN-UNA). Ruta Mariscal Estigarribia, km 11, San Lorenzo, Paraguay
  • Sonia Molina Facultad de Ciencias Naturales, Universidad Nacional de Asunción (FACEN-UNA). Ruta Mariscal Estigarribia, km 11, San Lorenzo, Paraguay

DOI:

https://doi.org/10.4013/gaea.2012.82.04

Abstract

The article describes gymnospermous fossil woods from Guavirá, a new locality exposing rocks from the Upper Permian Tacuary Formation in Paraguay. The identified taxa include the conifers Agathoxylon semibiseriatum (Pant & Singh) Leiva Verón & Crisafulli comb. nov. and Kaokoxylon rioclarense ex Mussa in Crisafulli & Leiva Verón (this paper), Polysolenoxylon whitei (Maniero) Kräusel & Dolianiti, Chapmanoxylon jamuriense Pant & Singh, and Baieroxylon cicatricum, Prasad & Lele, a species frequently associated with the Ginkgoales. The discovery of this new assemblage has paleoenvironmental and paleobiogeographic significance because this is the first record of a species with a solenoid pith in the Permian of Paraguay. Thus, it allies the Tacuary Formation to other gondwanic sequences of South America and helps to establish comparisons between their xylotaphofloras.

Keywords: wood anatomy, Upper Permian, Tacuary Formation, Paraguay.

Author Biographies

Valeria Leiva Verón, Centro de Ecología Aplicada (CECOAL- CONICET y Universidad Nacional del Nordeste). Ruta 5 km 2.5, Corrientes, Argentina

Alexandra Crisafulli, Centro de Ecología Aplicada (CECOAL- CONICET y Universidad Nacional del Nordeste). Ruta 5 km 2.5, Corrientes, Argentina

Rafael Herbst, Instituto Superior de Correlación Geológica (INSUGEO- CONICET). Las Piedras 201, 7º/B, 4000 San Miguel de Tucumán, Argentina

Víctor Filippi, Facultad de Ciencias Naturales, Universidad Nacional de Asunción (FACEN-UNA). Ruta Mariscal Estigarribia, km 11, San Lorenzo, Paraguay

Sonia Molina, Facultad de Ciencias Naturales, Universidad Nacional de Asunción (FACEN-UNA). Ruta Mariscal Estigarribia, km 11, San Lorenzo, Paraguay

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Published

2021-06-09

Issue

Vol. 8 No. 2 (2012): Jul/Dec

Section

Artigos

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