Permian Leonardosia organic oospores from southern Brazil

56 4 July 797 805 10.1111/pala.12016

SOUZA DE FARIA, R., RICARDI-BRANCO, F., CHRISTIANO DE SOUZA, I. 2013. Permian Leonardosia organic oospores from southern Brazil. Palaeontology, 56, 4, 797–805.

Rafael Souza de Faria, Fresia Ricardi-Branco and Isabel Cortez Christiano de Souza Leonardosia Sommer is one of the scarce Permian charophyte genera and is part of the lineage that may include the ancestors of the post-Palaeozoic families. Oospores of the species Leonardosia langei Sommer have been found in strata of the Teresina Formation, Paraná Basin, Southern Brazil, where they are preserved as compressions. The charophyte organs found in this formation, including the original description of Leonardosia have been previously been interpreted as gyrogonites despite the presence of a carbonaceous film. We propose that these charophyte organs and the fructifications should be re-interpreted as organic oospores rather than gyrogonites. The coiling pattern, in most cases, proved to be reverse as a result of the compression of the oospore against the internal wall of the dissolved gyrogonite. In some cases, the coiling was ambiguously observed in both directions by an overlap of the opposite walls of the oospore and the dissolved gyrogonite. A simple basal plate for L. langei was registered, and its relation with the main ideas about the phylogeny and the evolution of Mesozoic charophytes is also discussed. The ‘Stellatocharoideae’ is polyphyletic including both the stem lineage of the Nitellaceae, represented by the multipartite basal plate genera, and a clade that belongs to the evolutionary line of the Monoplacata, represented by Leonardosia.
  • CHRISTIANO de SOUZA, I., RICARDI-BRANCO, F. and VARGAS, Y. L.2012. Permian bryophytes of Western Gondwanaland from the Paraná Basin in Brazil. Palaeontology, 55, 229–241.
  • FARIA, R. S. and RICARDI-BRANCO, F.2009. Leonardosia langei Sommer (Charophyta, Porocharaceae) from Corumbataí Formation (Guadalupian), Piracicaba, SP, Brazil: first register of an antheridium and of corticated thalli. Ameghiniana, 46, 49–57.
  • FARIA, R. S. and RICARDI-BRANCO, F.2010. Lepidophyllodes corumbataensis sp. nov. from the Guadalupian in the Paraná Basin, southern Brazil. Review of Palaeobotany and Palynology, 160, 135–142.
  • FEIST, M. and GRAMBAST-FESSARD, N.2005a. Evolutionary history. 60–76. InKAESLER, R. (ed.). Treatise on Invertebrate Paleontology, Part B, Proctotista (Charophyta), Vol. 1. Geological Society of America, Boulder, Colorado, and University of Kansas, Laurence, Kansas, 631 pp.
  • FEIST, M. and GRAMBAST-FESSARD, N.2005b. Systematic descriptions. 92–147. InKAESLER, R. (ed.). Treatise on Invertebrate Paleontology, Part B, Proctotista (Charophyta), Vol. 1. Geological Society of America, Boulder, Colorado, and University of Kansas, Laurence, Kansas, 631 pp.
  • GRAMBAST, L.1962. Classification de l’embranchement des charophytes. Naturalia Monspeliensia (Série Botanique), 14, 63–86.
  • GRAMBAST, L. and GRAMBAST, N.1955. Les Raskyelloideae, sous-famille fossile des Characeae. Comptes Rendus de l’Académie des Sciences, 240, 999–1001.
  • GUERLESQUIN, M. and FEIST, M.2005. Morphology. 1–23. InKAESLER, R. (ed.). Treatise on Invertebrate Paleontology, Part B, Proctotista (Charophyta), Vol. 1. Geological Society of America, Boulder, Colorado, and University of Kansas, Laurence, Kansas, 631 pp.
  • HERBST, R.1981. Sobre la presencia de girogonites de Leonardosia langei Sommer (Charales, Porocharaceae) en el Permico Superior de Paraguay y Brasil. InII Congresso Latino-Americano de Paleontologia, Anais. Porto Alegre, Brazil, 249–255 pp.
  • LINDLEY, J.1836. A natural system of botany, 2nd edn. Longman, London, 526 pp.
  • LU, H. and LUO, Q.1984. Upper Permian and Triassic fossil charophytes from Xinjiang, with special reference to the development of Upper Palaeozoic to Lower Mesozoic charophyte floras. Acta Micropaleontologica Sinica, 1, 155–170. (In Chinese, English abstract).
  • LU, H. and ZHANG, S.1990. New Paleozoic charophytes of China. Acta Micropaleontologica Sinica, 7, 9–17. (In Chinese, English abstract).
  • LU, H., SOULIÉ-MÄRSCHE, I. and WANG, Q.1996. Evolution and classification of Palaeozoic charophytes. Acta Micropaleontologica Sinica, 13, 1–12.
  • MÄDLER, K.1952. Charophycean aus dem Nordwestdeutschen Kimmeridge. Geologisches Jahrbuch, 67, 1–46.
  • MARTIN-CLOSAS, C. and SCHUDACK, M. E.1991. Phylogenetic analysis and systematization of post-Paleozoic charophytes. Bulletin de la Société Botanique de France, Actualités Botaniques, 138 (1), 53–71.
  • MIGULA, W.1897. Die Characeen Deutschlands, Oesterreichs und der Schweiz. InRABENHORST, G. L. (ed.). Kryptogamen-flora von Deutschland, Oesterreichs und der Schweiz. Verlag Eduard Kummer, Leipzig, VII and 765 pp.
  • MILANI, E. J., FACCINI, U. F., SCHERER, C. M. S., ARAÚJO, L. M. and CUPERTINO, J. A.1998. Sequences and stratigraphic hierarchy of the Paraná Basin (Ordovician to Cretaceous), Southern Brazil. Boletim IG-USP, Série Científica, 29, 125–173.
  • MILANI, E. J., MELO, J. H. G., SOUZA, P. A., FERNANDES, L. A. and FRANA, A. B.2007. Bacia do Paraná. Boletim Geociências Petrobrás, 15 (2), 265–287.
  • PIA, J.1927. Thallophyta. 31–136. InHIRMER, M. (ed.). Handbuch der Palobotanik. I. R. Oldenbourg, München, Berlin, 768 pp.
  • RAGONHA, E. W. and SOARES, P. C.1974. Ocorrências de Carófitas Fósseis na Formação Estrada Nova em Anhembi, SP. XXVIII Congresso Brasileiro de Geologia, Anais. 271–275, Porto Alegre, Brazil, 319 pp.
  • ROHN, R.2007. The Passa Dois Group (Paraná Basin, Permian): investigations in progress. I Workshop – Problems in the Western Gondwana Geology, South America – Africa correlations: du Toit revisited, Extended Abstracts. Gramado, 151–157.
  • SMITH, G. M.1938. Cryptogamic Botany vol.1: Algae and Fungi. McGraw-Hill Book Company, New York, 545 pp.
  • SOMMER, F. W.1954. Contribuição à paleofitogeografia do Paraná. 175–194. InLANGE, F. W. (ed.). Paleontologia do Paraná. Volume Comemorativo do I Centenário do Estado do Paraná. Comissão de Comemorações do Centenário do Paraná, Paraná, Brazil, 210 pp.
  • SOULIÉ-MÄRSCHE, I.1989. Etude compare de gyrogonites actuelles et fossils et phylogénie des genres actuels. Imprimerie des Tilleuls, Millau, France, 237 pp.
  • SOULIÉ-MÄRSCHE, I.1999. Chirality in charophytes: stability and evolution from 400 million years to present. 191–207. InPALYI, G., ZUCCHI, C. and CAGLIOTI, L. (eds). Advances in Biochirality. Elsevier, Amsterdam, 407 pp.
  • SOULIÉ-MÄRSCHE, I.2008. The coiling pattern of Charophyte fructifications. 5th IRGC Symposium, Abstracts. Rostock, Germany.
  • WANG, Z.1984. Two new charophyte genera from the Upper Permian and their bearing on the phylogeny and classification of Charales and Trochiliscales. Acta Micropaleontologica Sinica, 1, 49–60. (In Chinese, English abstract).
  • WANG, Z. and WANG, R.1986. Permian Charophytes from southeast area of the North China platform. Acta Micropaleontologica Sinica, 3, 273–277. (In Chinese, English abstract).
  • WANG, Q., YANG, J.-L. and LU, H.-N.2003. Late Paleozoic assemblages of China. Acta Micropaleontologica Sínica, 20, 199–211.
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