Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Anuário do Instituto de Geociências (Online) |
Texto Completo: | https://revistas.ufrj.br/index.php/aigeo/article/view/7850 |
Resumo: | This research deals the data obtained from the analysis of calcareous microfossils in samples collected in Pirabas Formation that occurs at Mina B-17 Cimentos do Brasil S. A., municipality of Capanema and Atalaia beach, Salinópolis municipality, Pará State, and aiming at the systematic and paleobiological characterization. The study reveals 27 fragments of crinoids and 18 fragments of ophiuroids, represented by the family Gorgonocephalidae and genus Ophiomusium and Ophiactis (?) and among the crinoids, were recognized the order Comatulida. The taxonomic composition, living environment and biostratinomic features these echinoderms and other associated faunal elements studied in the lithofacies at Atalaia beach allowed to considere that the fossiliferous concentration is parauthoctonous. The fragments of the echinoderms collected in samples of B-17 Mine characterize a fossiliferous concentration allochthonous where the vertebrae were transported to the lagoon by tidal channels during storms that ravaged the sea Pirabas. The echinofaune studied keep affinity with the miocenic associations of the Caribbean Biogeographic Province, and the taxa identified corroborate the faunal exchange between regions Eastern Tropical Pacific (PLT) and Tropical Western Atlantic (AOT). |
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Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, BrazilSistemática e Paleobiologia de Microfósseis de Equinodermas da Formação Pirabas (Mioceno Inferior), Estado do Pará, BrasilPirabas Formation; Ophiuroidea; Crinoidea; Lower MioceneFormação Pirabas; Ophiuroidea; Crinoidea; Mioceno inferiorThis research deals the data obtained from the analysis of calcareous microfossils in samples collected in Pirabas Formation that occurs at Mina B-17 Cimentos do Brasil S. A., municipality of Capanema and Atalaia beach, Salinópolis municipality, Pará State, and aiming at the systematic and paleobiological characterization. The study reveals 27 fragments of crinoids and 18 fragments of ophiuroids, represented by the family Gorgonocephalidae and genus Ophiomusium and Ophiactis (?) and among the crinoids, were recognized the order Comatulida. The taxonomic composition, living environment and biostratinomic features these echinoderms and other associated faunal elements studied in the lithofacies at Atalaia beach allowed to considere that the fossiliferous concentration is parauthoctonous. The fragments of the echinoderms collected in samples of B-17 Mine characterize a fossiliferous concentration allochthonous where the vertebrae were transported to the lagoon by tidal channels during storms that ravaged the sea Pirabas. The echinofaune studied keep affinity with the miocenic associations of the Caribbean Biogeographic Province, and the taxa identified corroborate the faunal exchange between regions Eastern Tropical Pacific (PLT) and Tropical Western Atlantic (AOT).Este trabalho apresenta os dados obtidos a partir da análise de microfósseis calcários presentes em amostras coletadas na Formação Pirabas, Mina B-17 da Cimentos do Brasil S. A., município de Capanema e praia do Atalaia município de Salinópolis, estado do Pará, visando a caracterização sistemática e paleobiológica de novos elementos de equinodermos da Formação Pirabas, pertencentes aos grupos Crinoidea e Ophiuroidea, ainda não reconhecidos nesta unidade litoestratigráfica. Foram recuperados 27 fragmentos de crinoides e 18 fragmentos de ofiuroides, sendo reconhecidos entre os ofiuroides a família Gorgonocephalidae e os gêneros Ophiomusium e Ophiactis (?) e entre os crinoides a ordem Comatulida. A composição taxonômica, ambiente de vida e feições bioestratinômicas destes equinodermos e dos demais elementos faunísticos associados, define que é parautóctone a concentração fossilífera de ofiuroides e crinoides coletados nas litofacies tipicamente marinhas plataformais aflorantes na praia do Atalaia, e que os elementos recuperados na litofácies da Mina B-17 caracterizam uma concentração fossilífera alóctone, onde as vértebras foram carreadas para a laguna pelos canais de maré durante as tempestades que assolaram o mar de Pirabas. Os ofiuroides e crinoides estudados guardam afinidade com as equinofaunas miocênicas da Província Biogeográfica Caribeana, corroborando o intercâmbio faunístico entre as regiões Pacífico Leste Tropical (PLT) e Atlântico Oeste Tropical (AOT).Universidade Federal do Rio de Janeiro2017-02-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://revistas.ufrj.br/index.php/aigeo/article/view/785010.11137/2015_1_116_127Anuário do Instituto de Geociências; Vol 38, No 1 (2015); 116-127Anuário do Instituto de Geociências; Vol 38, No 1 (2015); 116-1271982-39080101-9759reponame:Anuário do Instituto de Geociências (Online)instname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJporhttps://revistas.ufrj.br/index.php/aigeo/article/view/7850/6331Copyright (c) 2016 Anuário do Instituto de Geociênciashttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessTávora, Vladimir de AraújoMonteiro, Débora BarrosoReis, Salustriano Bosco2017-02-15T17:59:16Zoai:www.revistas.ufrj.br:article/7850Revistahttps://revistas.ufrj.br/index.php/aigeo/indexPUBhttps://revistas.ufrj.br/index.php/aigeo/oaianuario@igeo.ufrj.br||1982-39080101-9759opendoar:2017-02-15T17:59:16Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ)false |
dc.title.none.fl_str_mv |
Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, Brazil Sistemática e Paleobiologia de Microfósseis de Equinodermas da Formação Pirabas (Mioceno Inferior), Estado do Pará, Brasil |
title |
Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, Brazil |
spellingShingle |
Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, Brazil Távora, Vladimir de Araújo Pirabas Formation; Ophiuroidea; Crinoidea; Lower Miocene Formação Pirabas; Ophiuroidea; Crinoidea; Mioceno inferior |
title_short |
Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, Brazil |
title_full |
Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, Brazil |
title_fullStr |
Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, Brazil |
title_full_unstemmed |
Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, Brazil |
title_sort |
Systematic and Paleobiology of the Echinodermata Microfossils of the Pirabas Formation (Lower Miocene), Pará State, Brazil |
author |
Távora, Vladimir de Araújo |
author_facet |
Távora, Vladimir de Araújo Monteiro, Débora Barroso Reis, Salustriano Bosco |
author_role |
author |
author2 |
Monteiro, Débora Barroso Reis, Salustriano Bosco |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Távora, Vladimir de Araújo Monteiro, Débora Barroso Reis, Salustriano Bosco |
dc.subject.por.fl_str_mv |
Pirabas Formation; Ophiuroidea; Crinoidea; Lower Miocene Formação Pirabas; Ophiuroidea; Crinoidea; Mioceno inferior |
topic |
Pirabas Formation; Ophiuroidea; Crinoidea; Lower Miocene Formação Pirabas; Ophiuroidea; Crinoidea; Mioceno inferior |
description |
This research deals the data obtained from the analysis of calcareous microfossils in samples collected in Pirabas Formation that occurs at Mina B-17 Cimentos do Brasil S. A., municipality of Capanema and Atalaia beach, Salinópolis municipality, Pará State, and aiming at the systematic and paleobiological characterization. The study reveals 27 fragments of crinoids and 18 fragments of ophiuroids, represented by the family Gorgonocephalidae and genus Ophiomusium and Ophiactis (?) and among the crinoids, were recognized the order Comatulida. The taxonomic composition, living environment and biostratinomic features these echinoderms and other associated faunal elements studied in the lithofacies at Atalaia beach allowed to considere that the fossiliferous concentration is parauthoctonous. The fragments of the echinoderms collected in samples of B-17 Mine characterize a fossiliferous concentration allochthonous where the vertebrae were transported to the lagoon by tidal channels during storms that ravaged the sea Pirabas. The echinofaune studied keep affinity with the miocenic associations of the Caribbean Biogeographic Province, and the taxa identified corroborate the faunal exchange between regions Eastern Tropical Pacific (PLT) and Tropical Western Atlantic (AOT). |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-02-15 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufrj.br/index.php/aigeo/article/view/7850 10.11137/2015_1_116_127 |
url |
https://revistas.ufrj.br/index.php/aigeo/article/view/7850 |
identifier_str_mv |
10.11137/2015_1_116_127 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufrj.br/index.php/aigeo/article/view/7850/6331 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Anuário do Instituto de Geociências http://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 Anuário do Instituto de Geociências http://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal do Rio de Janeiro |
publisher.none.fl_str_mv |
Universidade Federal do Rio de Janeiro |
dc.source.none.fl_str_mv |
Anuário do Instituto de Geociências; Vol 38, No 1 (2015); 116-127 Anuário do Instituto de Geociências; Vol 38, No 1 (2015); 116-127 1982-3908 0101-9759 reponame:Anuário do Instituto de Geociências (Online) instname:Universidade Federal do Rio de Janeiro (UFRJ) instacron:UFRJ |
instname_str |
Universidade Federal do Rio de Janeiro (UFRJ) |
instacron_str |
UFRJ |
institution |
UFRJ |
reponame_str |
Anuário do Instituto de Geociências (Online) |
collection |
Anuário do Instituto de Geociências (Online) |
repository.name.fl_str_mv |
Anuário do Instituto de Geociências (Online) - Universidade Federal do Rio de Janeiro (UFRJ) |
repository.mail.fl_str_mv |
anuario@igeo.ufrj.br|| |
_version_ |
1797053541791039488 |