Floristic similarities of the Artinskian Siderópolis Member macroflora, Rio Bonito formation (Paraná Basin, Brazil) with Cisuralian paleofloras of India

Authors

  • Mary Elizabeth Cerruti Bernardes-de-Oliveira Universidade de São Paulo - USP, Instituto de Geociências, Departamento de Geologia Sedimentar e Ambiental - GSA, Laboratório de Paleobotânica e Palinologia, Programa de Pós-graduação em Geoquímica e Geotectônica, São Paulo.
  • Pauline Sabina Kavali Universidade de São Paulo - USP, Instituto de Geociências, Departamento de Geologia Sedimentar e Ambiental - GSA, Laboratório de Paleobotânica e Palinologia, Programa de Pós-graduação em Geoquímica e Geotectônica, São Paulo. Birbal Sahni Institute of Palaeosciences, Lucknow.
  • Sandra Eiko Mune Universidade de São Paulo - USP, Instituto de Geociências, Departamento de Geologia Sedimentar e Ambiental - GSA, Laboratório de Paleobotânica e Palinologia, Programa de Pós-graduação em Geoquímica e Geotectônica, São Paulo.
  • Maria Judite Garcia Universidade de São Paulo - USP, Instituto de Geociências, Departamento de Geologia Sedimentar e Ambiental - GSA, Laboratório de Paleobotânica e Palinologia, Programa de Pós-graduação em Geoquímica e Geotectônica, São Paulo.
  • Mahesh Shivanna Universidade Federal do Rio Grande do Sul - UFRGS, Instituto de Geociências, Porto Alegre.
  • Roberto Iannuzzi Universidade Federal do Rio Grande do Sul - UFRGS, Instituto de Geociências, Porto Alegre.
  • Karoline Gonçalves Pereira Universidade Guarulhos - UnG, Guarulhos.

DOI:

https://doi.org/10.11606/issn.2316-9095.v16i4p53-64

Keywords:

Glossopteris, Western Gondwana, Eastern Gondwana, Artinskian.

Abstract

This contribution focuses on the relationship between the Siderópolis Member paleoflora and Indian Gondwanan paleofloras, especially with those of the Cisuralian stages, thus providing additional criteria for the correlation of Western and Eastern Gondwanan coal successions in the lower Permian interval. Despite the large number of species in common with the Karharbari Stage (Sakmarian) flora, the Siderópolis paleoflora exhibits a higher percentage and diversification of the genus Glossopteris, which is less expressive in the Karharbari Stage floras, while the declining Gangamopteris-Noeggerathiopsis complex in Siderópolis Member paleoflora still dominates the associations of Karharbari Stage. However, the floristic composition of the lower level of the Barakar Stage (Artinskian), despite having fewer species in common with the Siderópolis paleoflora, exhibits the characters of the latter vis-à-vis the dominance and diversity of the genus Glossopteris over the Gangamopteris‑Noeggerathiopsis complex, which decreases both in diversity as well as in abundance in the lower Barakar, similar to what occurs in the Brazilian paleoflora. The decline of the icehouse stage and the similar latitudinal position of the Gondwanan regions compared in the present study seem to have acted as important factors to the development of similar vegetation patterns in coal floras from Western (Brazilian) and Eastern (Indian) Gondwana during the Artinskian.

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Published

2016-12-16

Issue

Vol. 16 No. 4 (2016)

Section

Articles

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How to Cite

Bernardes-de-Oliveira, M. E. C., Kavali, P. S., Mune, S. E., Garcia, M. J., Shivanna, M., Iannuzzi, R., & Pereira, K. G. (2016). Floristic similarities of the Artinskian Siderópolis Member macroflora, Rio Bonito formation (Paraná Basin, Brazil) with Cisuralian paleofloras of India. Geologia USP. Série Científica, 16(4), 53-64. https://doi.org/10.11606/issn.2316-9095.v16i4p53-64