Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance

Autores
Neves, Jacqueline. P.; Taboada, Arturo Cesar; Weinschütz, Luis. C.; Simoes, Marcello G.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Two remarkable brachiopod-bearing occurrences are recorded in the Late Paleozoic deposits of the Paraná Basin, cropping-out in the Mafra county, State of Santa Catarina, southern Brazil. These deposits belong to the upper-mid part of Itararé Group, known as Mafra and Lontras assemblages. The first one belong to the mid portion of the Mafra Formation, recorded in the Potreiro Farm outcrop. The second brachiopod occurrence is recorded in a 1.5-m-thick deposit of dark siliceous shales (Lontras shale), in which fossil remains are extremely abundant. Shells come from the Campáleo outcrop, located close to the BR-280 highway, 2km far from Mafra county. These shales are referred to the upper part of the Campo Mourão Formation. Until now, only two species of brachiopods were formally described or identified for these assemblages (i.e., Lingula imbituvensis Oliveira, Orbiculoidea guaraunensis Oliveira). Hence, the brachiopods faunas above are here described and/or revised, based on the available material deposited in the CENPALEO scientific collection (Contestado University). Preliminary results of our systematic survey indicated that both faunas are much diverse than previously realized. The Lontras shale brachiopod assemblage includes: Biconvexiella roxoi (Oliveira), Quinquenella? sp., Beecheria? sp., Langella imbituvensis (Oliveira), and Orbiculoidea guaraunensis Oliveira. On the other hand, the Mafra assemblage is composed by B. roxoi, Q. rionegrensis?, L. imbituvensis, and O. guaraunensis. Therefore, both assemblages show various taxa in common. It is noteworthy that the species L. imbituvensis, B. roxoi and Q. rionegrensis are also recorded in the upper part of the Taciba Formation, in Teixeira Soares region, State of Paraná. This is significant since: a- suggests a close faunal affinity among those brachiopodassemblages from distinct units of the Itararé Group; b- indicates that the stratigraphic range of those three above mentioned species is very wide, in which the oldest occurrence is recorded in the mid portion of the Mafra Formation and the youngest one in the uppermost portion of the Taciba Formation. Finally, both faunas are remarkable since they precede the record of the Eurydesma fauna, which thrived in the Paraná Basin, during the deposition of the Taciba Formation.
Fil: Neves, Jacqueline. P.. Universidade Federal do Paraná; Brasil
Fil: Taboada, Arturo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
Fil: Weinschütz, Luis. C.. Universidade Federal do Paraná; Brasil
Fil: Simoes, Marcello G.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
XXV Congresso Brasileiro de Paleontologia
Riberao Preto
Brasil
Sociedade Brasileira de Paleontologia
Materia
BRACHIOPODS
ITARARÉ GROUP
PARANÁ BASIN
CARBONIFEROUS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/160205

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network_name_str CONICET Digital (CONICET)
spelling Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significanceNeves, Jacqueline. P.Taboada, Arturo CesarWeinschütz, Luis. C.Simoes, Marcello G.BRACHIOPODSITARARÉ GROUPPARANÁ BASINCARBONIFEROUShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Two remarkable brachiopod-bearing occurrences are recorded in the Late Paleozoic deposits of the Paraná Basin, cropping-out in the Mafra county, State of Santa Catarina, southern Brazil. These deposits belong to the upper-mid part of Itararé Group, known as Mafra and Lontras assemblages. The first one belong to the mid portion of the Mafra Formation, recorded in the Potreiro Farm outcrop. The second brachiopod occurrence is recorded in a 1.5-m-thick deposit of dark siliceous shales (Lontras shale), in which fossil remains are extremely abundant. Shells come from the Campáleo outcrop, located close to the BR-280 highway, 2km far from Mafra county. These shales are referred to the upper part of the Campo Mourão Formation. Until now, only two species of brachiopods were formally described or identified for these assemblages (i.e., Lingula imbituvensis Oliveira, Orbiculoidea guaraunensis Oliveira). Hence, the brachiopods faunas above are here described and/or revised, based on the available material deposited in the CENPALEO scientific collection (Contestado University). Preliminary results of our systematic survey indicated that both faunas are much diverse than previously realized. The Lontras shale brachiopod assemblage includes: Biconvexiella roxoi (Oliveira), Quinquenella? sp., Beecheria? sp., Langella imbituvensis (Oliveira), and Orbiculoidea guaraunensis Oliveira. On the other hand, the Mafra assemblage is composed by B. roxoi, Q. rionegrensis?, L. imbituvensis, and O. guaraunensis. Therefore, both assemblages show various taxa in common. It is noteworthy that the species L. imbituvensis, B. roxoi and Q. rionegrensis are also recorded in the upper part of the Taciba Formation, in Teixeira Soares region, State of Paraná. This is significant since: a- suggests a close faunal affinity among those brachiopodassemblages from distinct units of the Itararé Group; b- indicates that the stratigraphic range of those three above mentioned species is very wide, in which the oldest occurrence is recorded in the mid portion of the Mafra Formation and the youngest one in the uppermost portion of the Taciba Formation. Finally, both faunas are remarkable since they precede the record of the Eurydesma fauna, which thrived in the Paraná Basin, during the deposition of the Taciba Formation.Fil: Neves, Jacqueline. P.. Universidade Federal do Paraná; BrasilFil: Taboada, Arturo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; ArgentinaFil: Weinschütz, Luis. C.. Universidade Federal do Paraná; BrasilFil: Simoes, Marcello G.. Universidade Estadual Paulista Julio de Mesquita Filho; BrasilXXV Congresso Brasileiro de PaleontologiaRiberao PretoBrasilSociedade Brasileira de PaleontologiaSociadade Brasileira de Paleontologia2017info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoJournalhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/160205Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance; XXV Congresso Brasileiro de Paleontologia; Riberao Preto; Brasil; 2017; 1-21807-2550CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://sbpbrasil.org/publications/index.php/paleodest/issue/view/106Nacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:12Zoai:ri.conicet.gov.ar:11336/160205instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:58:12.498CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance
title Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance
spellingShingle Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance
Neves, Jacqueline. P.
BRACHIOPODS
ITARARÉ GROUP
PARANÁ BASIN
CARBONIFEROUS
title_short Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance
title_full Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance
title_fullStr Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance
title_full_unstemmed Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance
title_sort Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance
dc.creator.none.fl_str_mv Neves, Jacqueline. P.
Taboada, Arturo Cesar
Weinschütz, Luis. C.
Simoes, Marcello G.
author Neves, Jacqueline. P.
author_facet Neves, Jacqueline. P.
Taboada, Arturo Cesar
Weinschütz, Luis. C.
Simoes, Marcello G.
author_role author
author2 Taboada, Arturo Cesar
Weinschütz, Luis. C.
Simoes, Marcello G.
author2_role author
author
author
dc.subject.none.fl_str_mv BRACHIOPODS
ITARARÉ GROUP
PARANÁ BASIN
CARBONIFEROUS
topic BRACHIOPODS
ITARARÉ GROUP
PARANÁ BASIN
CARBONIFEROUS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Two remarkable brachiopod-bearing occurrences are recorded in the Late Paleozoic deposits of the Paraná Basin, cropping-out in the Mafra county, State of Santa Catarina, southern Brazil. These deposits belong to the upper-mid part of Itararé Group, known as Mafra and Lontras assemblages. The first one belong to the mid portion of the Mafra Formation, recorded in the Potreiro Farm outcrop. The second brachiopod occurrence is recorded in a 1.5-m-thick deposit of dark siliceous shales (Lontras shale), in which fossil remains are extremely abundant. Shells come from the Campáleo outcrop, located close to the BR-280 highway, 2km far from Mafra county. These shales are referred to the upper part of the Campo Mourão Formation. Until now, only two species of brachiopods were formally described or identified for these assemblages (i.e., Lingula imbituvensis Oliveira, Orbiculoidea guaraunensis Oliveira). Hence, the brachiopods faunas above are here described and/or revised, based on the available material deposited in the CENPALEO scientific collection (Contestado University). Preliminary results of our systematic survey indicated that both faunas are much diverse than previously realized. The Lontras shale brachiopod assemblage includes: Biconvexiella roxoi (Oliveira), Quinquenella? sp., Beecheria? sp., Langella imbituvensis (Oliveira), and Orbiculoidea guaraunensis Oliveira. On the other hand, the Mafra assemblage is composed by B. roxoi, Q. rionegrensis?, L. imbituvensis, and O. guaraunensis. Therefore, both assemblages show various taxa in common. It is noteworthy that the species L. imbituvensis, B. roxoi and Q. rionegrensis are also recorded in the upper part of the Taciba Formation, in Teixeira Soares region, State of Paraná. This is significant since: a- suggests a close faunal affinity among those brachiopodassemblages from distinct units of the Itararé Group; b- indicates that the stratigraphic range of those three above mentioned species is very wide, in which the oldest occurrence is recorded in the mid portion of the Mafra Formation and the youngest one in the uppermost portion of the Taciba Formation. Finally, both faunas are remarkable since they precede the record of the Eurydesma fauna, which thrived in the Paraná Basin, during the deposition of the Taciba Formation.
Fil: Neves, Jacqueline. P.. Universidade Federal do Paraná; Brasil
Fil: Taboada, Arturo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Centro de Investigación Esquel de Montaña y Estepa Patagónica. Universidad Nacional de la Patagonia "San Juan Bosco". Centro de Investigación Esquel de Montaña y Estepa Patagónica; Argentina
Fil: Weinschütz, Luis. C.. Universidade Federal do Paraná; Brasil
Fil: Simoes, Marcello G.. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
XXV Congresso Brasileiro de Paleontologia
Riberao Preto
Brasil
Sociedade Brasileira de Paleontologia
description Two remarkable brachiopod-bearing occurrences are recorded in the Late Paleozoic deposits of the Paraná Basin, cropping-out in the Mafra county, State of Santa Catarina, southern Brazil. These deposits belong to the upper-mid part of Itararé Group, known as Mafra and Lontras assemblages. The first one belong to the mid portion of the Mafra Formation, recorded in the Potreiro Farm outcrop. The second brachiopod occurrence is recorded in a 1.5-m-thick deposit of dark siliceous shales (Lontras shale), in which fossil remains are extremely abundant. Shells come from the Campáleo outcrop, located close to the BR-280 highway, 2km far from Mafra county. These shales are referred to the upper part of the Campo Mourão Formation. Until now, only two species of brachiopods were formally described or identified for these assemblages (i.e., Lingula imbituvensis Oliveira, Orbiculoidea guaraunensis Oliveira). Hence, the brachiopods faunas above are here described and/or revised, based on the available material deposited in the CENPALEO scientific collection (Contestado University). Preliminary results of our systematic survey indicated that both faunas are much diverse than previously realized. The Lontras shale brachiopod assemblage includes: Biconvexiella roxoi (Oliveira), Quinquenella? sp., Beecheria? sp., Langella imbituvensis (Oliveira), and Orbiculoidea guaraunensis Oliveira. On the other hand, the Mafra assemblage is composed by B. roxoi, Q. rionegrensis?, L. imbituvensis, and O. guaraunensis. Therefore, both assemblages show various taxa in common. It is noteworthy that the species L. imbituvensis, B. roxoi and Q. rionegrensis are also recorded in the upper part of the Taciba Formation, in Teixeira Soares region, State of Paraná. This is significant since: a- suggests a close faunal affinity among those brachiopodassemblages from distinct units of the Itararé Group; b- indicates that the stratigraphic range of those three above mentioned species is very wide, in which the oldest occurrence is recorded in the mid portion of the Mafra Formation and the youngest one in the uppermost portion of the Taciba Formation. Finally, both faunas are remarkable since they precede the record of the Eurydesma fauna, which thrived in the Paraná Basin, during the deposition of the Taciba Formation.
publishDate 2017
dc.date.none.fl_str_mv 2017
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Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance; XXV Congresso Brasileiro de Paleontologia; Riberao Preto; Brasil; 2017; 1-2
1807-2550
CONICET Digital
CONICET
url http://hdl.handle.net/11336/160205
identifier_str_mv Brachiopods of the Itararé Group from Mafra county, southern Brazil, and their geological significance; XXV Congresso Brasileiro de Paleontologia; Riberao Preto; Brasil; 2017; 1-2
1807-2550
CONICET Digital
CONICET
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language eng
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