An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic...

Autores
Armella, Matías Alberto; Ercoli, Marcos Darío
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The marginal-marine, low-energy, carbonate ramp deposits of the La Tosca Member (Huitrín Formation, Barremian) in southern Mendoza Province, Argentina, bear an abundant though low-diversity macrobenthic invertebrate fauna that is scarce or absent in the outcrops of the unit in the Neuquén Province. Here we describe new taxa from the Quebrada del Gastrópodo and Ranquil 1 sections and provide taxonomic revisions for other key faunal elements. The species discussed herein are the gastropods Paleoanculosa macrochilinoides (Doello-Jurado), Provalvata minor sp. nov., and Provalvata maior sp. nov., the bivalve Rutitrigonia cintarojensis sp. nov., and the serpulid Parsimonia aff. laevis (Goldfu?). Additionally, in order to analyze the observed changes in faunal content along the studied section, a paleoecological analysis was performed combining estimation of diversity indices and the paleoautoecology of the fauna recorded in Quebrada del Gastrópodo. Three macrobenthic assemblages were qualitatively recognized in the field; from base to top: 1) Paleoanculosa macrochilinoides, 2) serpulid-gastropod, and 3) bivalve-serpulid assemblages. Species richness and equitability increase upwards. This trend suggests a reduction in environmental stress from bottom to top. The first two assemblages indicate settings with fluctuating environmental parameters, whilst the third points to higher environmental stability. Euryhaline taxa dominate, whilst stenohaline species are scarce or absent in the lower two thirds of the succession. The nature of the stress is interpreted herein to be mainly related to high-frequency salinity variations, especially in the first and second assemblages in which temporal deviations from euhaline to meso-brachyhaline and brachyhaline conditions are hypothesized.
Fil: Armella, Matías Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Ercoli, Marcos Darío. Universidad Nacional de Jujuy. Instituto de Geología Minera; Argentina. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina
Materia
Argentina
Sistemática
Neógeno tardío
Mesotheriinae
Dientes
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:11336/95024
Acceder
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network_name_str CONICET Digital (CONICET)
spelling An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic ValueArmella, Matías AlbertoErcoli, Marcos DaríoArgentinaSistemáticaNeógeno tardíoMesotheriinaeDienteshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The marginal-marine, low-energy, carbonate ramp deposits of the La Tosca Member (Huitrín Formation, Barremian) in southern Mendoza Province, Argentina, bear an abundant though low-diversity macrobenthic invertebrate fauna that is scarce or absent in the outcrops of the unit in the Neuquén Province. Here we describe new taxa from the Quebrada del Gastrópodo and Ranquil 1 sections and provide taxonomic revisions for other key faunal elements. The species discussed herein are the gastropods Paleoanculosa macrochilinoides (Doello-Jurado), Provalvata minor sp. nov., and Provalvata maior sp. nov., the bivalve Rutitrigonia cintarojensis sp. nov., and the serpulid Parsimonia aff. laevis (Goldfu?). Additionally, in order to analyze the observed changes in faunal content along the studied section, a paleoecological analysis was performed combining estimation of diversity indices and the paleoautoecology of the fauna recorded in Quebrada del Gastrópodo. Three macrobenthic assemblages were qualitatively recognized in the field; from base to top: 1) Paleoanculosa macrochilinoides, 2) serpulid-gastropod, and 3) bivalve-serpulid assemblages. Species richness and equitability increase upwards. This trend suggests a reduction in environmental stress from bottom to top. The first two assemblages indicate settings with fluctuating environmental parameters, whilst the third points to higher environmental stability. Euryhaline taxa dominate, whilst stenohaline species are scarce or absent in the lower two thirds of the succession. The nature of the stress is interpreted herein to be mainly related to high-frequency salinity variations, especially in the first and second assemblages in which temporal deviations from euhaline to meso-brachyhaline and brachyhaline conditions are hypothesized.Fil: Armella, Matías Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; ArgentinaFil: Ercoli, Marcos Darío. Universidad Nacional de Jujuy. Instituto de Geología Minera; Argentina. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; ArgentinaAsociación Paleontológica Argentina2018-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95024Armella, Matías Alberto; Ercoli, Marcos Darío; An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value; Asociación Paleontológica Argentina; Ameghiniana; 55; 5; 7-2018; 592-5990002-70141851-8044CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1039info:eu-repo/semantics/altIdentifier/doi/10.5710/AMGH.17.07.2018.3186info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:53:06Zoai:ri.conicet.gov.ar:11336/95024instacron: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 09:53:06.645CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value
title An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value
spellingShingle An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value
Armella, Matías Alberto
Argentina
Sistemática
Neógeno tardío
Mesotheriinae
Dientes
title_short An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value
title_full An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value
title_fullStr An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value
title_full_unstemmed An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value
title_sort An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value
dc.creator.none.fl_str_mv Armella, Matías Alberto
Ercoli, Marcos Darío
author Armella, Matías Alberto
author_facet Armella, Matías Alberto
Ercoli, Marcos Darío
author_role author
author2 Ercoli, Marcos Darío
author2_role author
dc.subject.none.fl_str_mv Argentina
Sistemática
Neógeno tardío
Mesotheriinae
Dientes
topic Argentina
Sistemática
Neógeno tardío
Mesotheriinae
Dientes
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The marginal-marine, low-energy, carbonate ramp deposits of the La Tosca Member (Huitrín Formation, Barremian) in southern Mendoza Province, Argentina, bear an abundant though low-diversity macrobenthic invertebrate fauna that is scarce or absent in the outcrops of the unit in the Neuquén Province. Here we describe new taxa from the Quebrada del Gastrópodo and Ranquil 1 sections and provide taxonomic revisions for other key faunal elements. The species discussed herein are the gastropods Paleoanculosa macrochilinoides (Doello-Jurado), Provalvata minor sp. nov., and Provalvata maior sp. nov., the bivalve Rutitrigonia cintarojensis sp. nov., and the serpulid Parsimonia aff. laevis (Goldfu?). Additionally, in order to analyze the observed changes in faunal content along the studied section, a paleoecological analysis was performed combining estimation of diversity indices and the paleoautoecology of the fauna recorded in Quebrada del Gastrópodo. Three macrobenthic assemblages were qualitatively recognized in the field; from base to top: 1) Paleoanculosa macrochilinoides, 2) serpulid-gastropod, and 3) bivalve-serpulid assemblages. Species richness and equitability increase upwards. This trend suggests a reduction in environmental stress from bottom to top. The first two assemblages indicate settings with fluctuating environmental parameters, whilst the third points to higher environmental stability. Euryhaline taxa dominate, whilst stenohaline species are scarce or absent in the lower two thirds of the succession. The nature of the stress is interpreted herein to be mainly related to high-frequency salinity variations, especially in the first and second assemblages in which temporal deviations from euhaline to meso-brachyhaline and brachyhaline conditions are hypothesized.
Fil: Armella, Matías Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Correlación Geológica. Universidad Nacional de Tucumán. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Departamento de Geología. Cátedra Geología Estructural. Instituto Superior de Correlación Geológica; Argentina
Fil: Ercoli, Marcos Darío. Universidad Nacional de Jujuy. Instituto de Geología Minera; Argentina. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina
description The marginal-marine, low-energy, carbonate ramp deposits of the La Tosca Member (Huitrín Formation, Barremian) in southern Mendoza Province, Argentina, bear an abundant though low-diversity macrobenthic invertebrate fauna that is scarce or absent in the outcrops of the unit in the Neuquén Province. Here we describe new taxa from the Quebrada del Gastrópodo and Ranquil 1 sections and provide taxonomic revisions for other key faunal elements. The species discussed herein are the gastropods Paleoanculosa macrochilinoides (Doello-Jurado), Provalvata minor sp. nov., and Provalvata maior sp. nov., the bivalve Rutitrigonia cintarojensis sp. nov., and the serpulid Parsimonia aff. laevis (Goldfu?). Additionally, in order to analyze the observed changes in faunal content along the studied section, a paleoecological analysis was performed combining estimation of diversity indices and the paleoautoecology of the fauna recorded in Quebrada del Gastrópodo. Three macrobenthic assemblages were qualitatively recognized in the field; from base to top: 1) Paleoanculosa macrochilinoides, 2) serpulid-gastropod, and 3) bivalve-serpulid assemblages. Species richness and equitability increase upwards. This trend suggests a reduction in environmental stress from bottom to top. The first two assemblages indicate settings with fluctuating environmental parameters, whilst the third points to higher environmental stability. Euryhaline taxa dominate, whilst stenohaline species are scarce or absent in the lower two thirds of the succession. The nature of the stress is interpreted herein to be mainly related to high-frequency salinity variations, especially in the first and second assemblages in which temporal deviations from euhaline to meso-brachyhaline and brachyhaline conditions are hypothesized.
publishDate 2018
dc.date.none.fl_str_mv 2018-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/95024
Armella, Matías Alberto; Ercoli, Marcos Darío; An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value; Asociación Paleontológica Argentina; Ameghiniana; 55; 5; 7-2018; 592-599
0002-7014
1851-8044
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95024
identifier_str_mv Armella, Matías Alberto; Ercoli, Marcos Darío; An Evaluation of the Dental Features Used to Distinguish Typotheriopsis from Pseudotypotherium (Mesotheriidae, Notoungulata): Reappraisals and Proposals Regarding Their Systematic Value; Asociación Paleontológica Argentina; Ameghiniana; 55; 5; 7-2018; 592-599
0002-7014
1851-8044
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1039
info:eu-repo/semantics/altIdentifier/doi/10.5710/AMGH.17.07.2018.3186
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Asociación Paleontológica Argentina
publisher.none.fl_str_mv Asociación Paleontológica Argentina
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv 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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score 13.13397

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