A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin
- Autores
- Disaró, Sibelle Trevisan; Watanabe, Silvia; Totah, Violeta Ines
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Studying living benthic foraminifers from the northeastern Braziliancontinental margin for several years, we have recorded around 1,100 specieswith a tremendous foraminiferal richness. Many researchers were active in thelast century on the Tropical Southwest Atlantic. The possibility of beinginvolved in this research brings us a new understanding of the regionalforaminiferal biodiversity and promotes the discovery of a new speciespresenting now. Searching publications for similar species we had no success.Another difficulty was placing this new form in an adequate genus due tocertaindistinctive features; therefore, we probably have a new genus, too; fornow, we will call it Discorbinella (?) sp. nov.The test wasfrequently attached to bioclasts or lithoclasts but also free; it presents alow trochospiral arrangement, subcircular to oval outline, slightly lobed witha rounded periphery. It has a calcareous wall semi-transparent with milky whitecolor. The dorsal side is convex with 2.5 to 3 whorls, partially evolute. The suturesare gently curved and slightly depressed with a peculiar chamber overlappingdue to how the proximal portion of the subsequent chambers lays over the distalportion of the anterior one. It has 6 to 8 falciform to subrectangular chambersper whorl, increasing in size as added. Another notable characteristic is thelarge pores distributed over most of the spiral side, not uniform in size butalmost uniformly distributed, following the sutural direction on the dorsalside, giving a coarse appearance to the test. The umbilical side is involuteand slightly concave; sutures are sinuous, visible but obscured by theextensive development of papillae almost even in size, though they cover mostof the umbilical face except for the periphery, which shows a smooth stripewith pores, little ones. Umbilicus is covered by papillae from the chambers ofthe previous coil. The aperture is a small, simple opening on the periphery atthe base of the last chamber, another one on the umbilical side, under the wideflap projected towards the umbilicus. The height (mean ± SD) is 50.46 μm ±16.36, and the diameter is 166.20 μm ± 47.40. They live between 4 and 49 metersdeep. Considering the narrow continental shelf, they are found from the innerto the outer shelf on variable sediments: lithobioclastics, lithoclastics,biolithoclastics, and bioclastics.
Fil: Disaró, Sibelle Trevisan. Universidade Federal do Paraná; Brasil
Fil: Watanabe, Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Totah, Violeta Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
International Symposium on Foraminifera
Perugia
Italia
Grzybowski Foundation - Materia
-
GLOBOTHALAMEA (RHIZARIA, FORAMINIFERA)
NEW SPECIES
NORTHEASTERN BRAZIL - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/269163
Ver los metadatos del registro completo
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A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental marginDisaró, Sibelle TrevisanWatanabe, SilviaTotah, Violeta InesGLOBOTHALAMEA (RHIZARIA, FORAMINIFERA)NEW SPECIESNORTHEASTERN BRAZILhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Studying living benthic foraminifers from the northeastern Braziliancontinental margin for several years, we have recorded around 1,100 specieswith a tremendous foraminiferal richness. Many researchers were active in thelast century on the Tropical Southwest Atlantic. The possibility of beinginvolved in this research brings us a new understanding of the regionalforaminiferal biodiversity and promotes the discovery of a new speciespresenting now. Searching publications for similar species we had no success.Another difficulty was placing this new form in an adequate genus due tocertaindistinctive features; therefore, we probably have a new genus, too; fornow, we will call it Discorbinella (?) sp. nov.The test wasfrequently attached to bioclasts or lithoclasts but also free; it presents alow trochospiral arrangement, subcircular to oval outline, slightly lobed witha rounded periphery. It has a calcareous wall semi-transparent with milky whitecolor. The dorsal side is convex with 2.5 to 3 whorls, partially evolute. The suturesare gently curved and slightly depressed with a peculiar chamber overlappingdue to how the proximal portion of the subsequent chambers lays over the distalportion of the anterior one. It has 6 to 8 falciform to subrectangular chambersper whorl, increasing in size as added. Another notable characteristic is thelarge pores distributed over most of the spiral side, not uniform in size butalmost uniformly distributed, following the sutural direction on the dorsalside, giving a coarse appearance to the test. The umbilical side is involuteand slightly concave; sutures are sinuous, visible but obscured by theextensive development of papillae almost even in size, though they cover mostof the umbilical face except for the periphery, which shows a smooth stripewith pores, little ones. Umbilicus is covered by papillae from the chambers ofthe previous coil. The aperture is a small, simple opening on the periphery atthe base of the last chamber, another one on the umbilical side, under the wideflap projected towards the umbilicus. The height (mean ± SD) is 50.46 μm ±16.36, and the diameter is 166.20 μm ± 47.40. They live between 4 and 49 metersdeep. Considering the narrow continental shelf, they are found from the innerto the outer shelf on variable sediments: lithobioclastics, lithoclastics,biolithoclastics, and bioclastics.Fil: Disaró, Sibelle Trevisan. Universidade Federal do Paraná; BrasilFil: Watanabe, Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Totah, Violeta Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaInternational Symposium on ForaminiferaPerugiaItaliaGrzybowski FoundationGrzybowski FoundationPapazzoni, Cesare AndreaPetrizzo, Maria Rose2023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectSimposioBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/pdfhttp://hdl.handle.net/11336/269163A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin; International Symposium on Foraminifera; Perugia; Italia; 2023; 96-96978-83-941956-6-3CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://distav.unige.it/forams2022/sites/default/files/docs/GFSP27-Forams%202023-Abstracts-2.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:17:56Zoai:ri.conicet.gov.ar:11336/269163instacron: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:34982025-09-29 10:17:57.168CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin |
title |
A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin |
spellingShingle |
A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin Disaró, Sibelle Trevisan GLOBOTHALAMEA (RHIZARIA, FORAMINIFERA) NEW SPECIES NORTHEASTERN BRAZIL |
title_short |
A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin |
title_full |
A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin |
title_fullStr |
A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin |
title_full_unstemmed |
A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin |
title_sort |
A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin |
dc.creator.none.fl_str_mv |
Disaró, Sibelle Trevisan Watanabe, Silvia Totah, Violeta Ines |
author |
Disaró, Sibelle Trevisan |
author_facet |
Disaró, Sibelle Trevisan Watanabe, Silvia Totah, Violeta Ines |
author_role |
author |
author2 |
Watanabe, Silvia Totah, Violeta Ines |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Papazzoni, Cesare Andrea Petrizzo, Maria Rose |
dc.subject.none.fl_str_mv |
GLOBOTHALAMEA (RHIZARIA, FORAMINIFERA) NEW SPECIES NORTHEASTERN BRAZIL |
topic |
GLOBOTHALAMEA (RHIZARIA, FORAMINIFERA) NEW SPECIES NORTHEASTERN BRAZIL |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Studying living benthic foraminifers from the northeastern Braziliancontinental margin for several years, we have recorded around 1,100 specieswith a tremendous foraminiferal richness. Many researchers were active in thelast century on the Tropical Southwest Atlantic. The possibility of beinginvolved in this research brings us a new understanding of the regionalforaminiferal biodiversity and promotes the discovery of a new speciespresenting now. Searching publications for similar species we had no success.Another difficulty was placing this new form in an adequate genus due tocertaindistinctive features; therefore, we probably have a new genus, too; fornow, we will call it Discorbinella (?) sp. nov.The test wasfrequently attached to bioclasts or lithoclasts but also free; it presents alow trochospiral arrangement, subcircular to oval outline, slightly lobed witha rounded periphery. It has a calcareous wall semi-transparent with milky whitecolor. The dorsal side is convex with 2.5 to 3 whorls, partially evolute. The suturesare gently curved and slightly depressed with a peculiar chamber overlappingdue to how the proximal portion of the subsequent chambers lays over the distalportion of the anterior one. It has 6 to 8 falciform to subrectangular chambersper whorl, increasing in size as added. Another notable characteristic is thelarge pores distributed over most of the spiral side, not uniform in size butalmost uniformly distributed, following the sutural direction on the dorsalside, giving a coarse appearance to the test. The umbilical side is involuteand slightly concave; sutures are sinuous, visible but obscured by theextensive development of papillae almost even in size, though they cover mostof the umbilical face except for the periphery, which shows a smooth stripewith pores, little ones. Umbilicus is covered by papillae from the chambers ofthe previous coil. The aperture is a small, simple opening on the periphery atthe base of the last chamber, another one on the umbilical side, under the wideflap projected towards the umbilicus. The height (mean ± SD) is 50.46 μm ±16.36, and the diameter is 166.20 μm ± 47.40. They live between 4 and 49 metersdeep. Considering the narrow continental shelf, they are found from the innerto the outer shelf on variable sediments: lithobioclastics, lithoclastics,biolithoclastics, and bioclastics. Fil: Disaró, Sibelle Trevisan. Universidade Federal do Paraná; Brasil Fil: Watanabe, Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Totah, Violeta Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina International Symposium on Foraminifera Perugia Italia Grzybowski Foundation |
description |
Studying living benthic foraminifers from the northeastern Braziliancontinental margin for several years, we have recorded around 1,100 specieswith a tremendous foraminiferal richness. Many researchers were active in thelast century on the Tropical Southwest Atlantic. The possibility of beinginvolved in this research brings us a new understanding of the regionalforaminiferal biodiversity and promotes the discovery of a new speciespresenting now. Searching publications for similar species we had no success.Another difficulty was placing this new form in an adequate genus due tocertaindistinctive features; therefore, we probably have a new genus, too; fornow, we will call it Discorbinella (?) sp. nov.The test wasfrequently attached to bioclasts or lithoclasts but also free; it presents alow trochospiral arrangement, subcircular to oval outline, slightly lobed witha rounded periphery. It has a calcareous wall semi-transparent with milky whitecolor. The dorsal side is convex with 2.5 to 3 whorls, partially evolute. The suturesare gently curved and slightly depressed with a peculiar chamber overlappingdue to how the proximal portion of the subsequent chambers lays over the distalportion of the anterior one. It has 6 to 8 falciform to subrectangular chambersper whorl, increasing in size as added. Another notable characteristic is thelarge pores distributed over most of the spiral side, not uniform in size butalmost uniformly distributed, following the sutural direction on the dorsalside, giving a coarse appearance to the test. The umbilical side is involuteand slightly concave; sutures are sinuous, visible but obscured by theextensive development of papillae almost even in size, though they cover mostof the umbilical face except for the periphery, which shows a smooth stripewith pores, little ones. Umbilicus is covered by papillae from the chambers ofthe previous coil. The aperture is a small, simple opening on the periphery atthe base of the last chamber, another one on the umbilical side, under the wideflap projected towards the umbilicus. The height (mean ± SD) is 50.46 μm ±16.36, and the diameter is 166.20 μm ± 47.40. They live between 4 and 49 metersdeep. Considering the narrow continental shelf, they are found from the innerto the outer shelf on variable sediments: lithobioclastics, lithoclastics,biolithoclastics, and bioclastics. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Simposio Book http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
status_str |
publishedVersion |
format |
conferenceObject |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/269163 A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin; International Symposium on Foraminifera; Perugia; Italia; 2023; 96-96 978-83-941956-6-3 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/269163 |
identifier_str_mv |
A new calcareous Globothalamea (Rhizaria, Foraminifera) from the northeastern Brazilian continental margin; International Symposium on Foraminifera; Perugia; Italia; 2023; 96-96 978-83-941956-6-3 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://distav.unige.it/forams2022/sites/default/files/docs/GFSP27-Forams%202023-Abstracts-2.pdf |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/vnd.openxmlformats-officedocument.wordprocessingml.document application/pdf |
dc.coverage.none.fl_str_mv |
Internacional |
dc.publisher.none.fl_str_mv |
Grzybowski Foundation |
publisher.none.fl_str_mv |
Grzybowski Foundation |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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