Rare Carboniferous and Permian glacial and non-glacial bryophytes and associated lycophyte megaspores of the Parana Basin, Brazil: A new occurrence and paleoenvironmental considerations

dc.contributor.authorRicardi-Branco, Fresia
dc.contributor.authorRohn, Rosemarie [UNESP]
dc.contributor.authorLonghim, Marcia Emilia
dc.contributor.authorCosta, Juliana Sampaio
dc.contributor.authorMartine, Ariel Milani
dc.contributor.authorChristiano-de-Souza, Isabel Cortez
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionPetrobras SA
dc.date.accessioned2018-11-26T17:13:48Z
dc.date.available2018-11-26T17:13:48Z
dc.date.issued2016-12-01
dc.description.abstractFossil bryophytes are rare because their preservation is compromised by the presence of a thin cuticle (if any) and a lack of lignin. Except for the occurrence of one bryophyte in the glacial Dwyka Group of the Karoo Basin, the other rare Late Paleozoic records in Gondwana are notably from the Parana Basin in Southeast/South Brazil. Four bryophyte sites (including a newly discovered one) were found in the lower part of the thick Permo-Carboniferous glacial succession of the Itarare Group, and one was found in the Guadalupian Teresina Formation, which was roughly assigned to an epeiric sea (or lake) dominated by a warm, semi-arid climate. This study describes the fossils from the new occurrence from the Itarare Group and discusses the context in which the bryophyte beds originated in the basin. The new samples confirm that all of the bryophytes of the Itarare Group can be classified as Dwykea araroii Ricardi-Branco et al. (a possible pleurocarp) and are associated with the lycophyte megaspore Sublagenicula brasiliensis (Dijkstra) Dybova-Jachowicz. In the much younger Teresina Formation, the bryophytes are Yguajemanus yucapirus Cristiano-de-Souza et al. and Capimirinus riopretensis Cristiano-de-Souza et al., and abundant charophytes and rare dwarf lycophyte stems and bracts are present in the same layers. Although the two stratigraphic units represent distinct paleoenvironments and climates, they seem to share some characteristics: a) the bryophyte assemblages were transported very little; b) they were deposited in very calm environments; c) they were the main components (along with some lycophytes) of local or poorly diversified regional vegetation. The low number of species, which is characteristic of opportunistic communities, can be explained by local or regional conditions that would have been stressful for the vascular plants in other areas. During the deposition of the Itarare Group, the main control was probably the cold climate in addition to a relative (liquid) water deficit because the bryophyte vegetation may have belonged to a tundra biome in areas of retreating glaciers. For the Teresina Formation, it is possible that the control was scarce freshwater, an unstable environment and water-saturated soil in a scenario of bryophyte vegetation living around temporary ponds in a wide marginal area of the epeiric sea. (C) 2016 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv Estadual Campinas, Inst Geociencias, P Box 6152, BR-13083970 Campinas, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Geol Aplicada, Inst Geociencias & Ciencias Exatas, Campus Rio Claro,P Box 178, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationPetrobras SA, CENPES, PDGEO, Gerencia Bioestratig & Paleoecol Aplicada, Ave Horacio Macedo,950 Predio,20 Sala, BR-21941915 Rio De Janeiro, RJ, Brazil
dc.description.affiliationUniv Estadual Campinas, Inst Geociencias, Programa Posgrad Geociencias, P Box 6752, BR-13083970 Campinas, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Geol Aplicada, Inst Geociencias & Ciencias Exatas, Campus Rio Claro,P Box 178, BR-13506900 Rio Claro, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 97/03639-8
dc.description.sponsorshipIdFAPESP: 2013/11563-6
dc.description.sponsorshipIdCNPq: 304805/2014-9
dc.format.extent63-75
dc.identifierhttp://dx.doi.org/10.1016/j.jsames.2016.07.014
dc.identifier.citationJournal Of South American Earth Sciences. Oxford: Pergamon-elsevier Science Ltd, v. 72, p. 63-75, 2016.
dc.identifier.doi10.1016/j.jsames.2016.07.014
dc.identifier.fileWOS000389556100006.pdf
dc.identifier.issn0895-9811
dc.identifier.lattes8936275161197131
dc.identifier.orcid0000-0001-6110-4194
dc.identifier.urihttp://hdl.handle.net/11449/162233
dc.identifier.wosWOS:000389556100006
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal Of South American Earth Sciences
dc.relation.ispartofsjr0,829
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectMosses
dc.subjectPleurocarps
dc.subjectMegaspores
dc.subjectLate Paleozoic
dc.subjectPaleoclimatology
dc.subjectGlaciation
dc.subjectTundra
dc.titleRare Carboniferous and Permian glacial and non-glacial bryophytes and associated lycophyte megaspores of the Parana Basin, Brazil: A new occurrence and paleoenvironmental considerationsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes8936275161197131[2]
unesp.author.orcid0000-0003-1004-013X[1]
unesp.author.orcid0000-0001-6110-4194[2]

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