Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications

Autores
Luci, Leticia; Lazo, Dario Gustavo; Cichowolski, Marcela
Año de publicación
2013
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The Agrio Formation (late Valanginian to earliest Barremian) of the Neuquén Basin (Argentina) presents diverse marine mollusk assemblages. Hard substrate faunas, however, have been given little attention. Shells of three cephalopods and two bivalve basibiont genera were examined for encrusters, in order to characterize and describe them. Nineteen encrusting taxa were found. Encrusting bivalves were represented by a gryphaeid oyster and a plicatuliid, while byssate one comprised mytilids and anomiids. Six serpulids and one sabellid polychaete worms were recognized. Bryozoans comprised five cyclostomes, and one cheilostome. Agglutinated foraminifers are represented by one species, and a single coral specimen was also found. Oysters are overwhelmingly dominant, usually exceeding 70% of the fauna. Serpulids are a distant second in abundance, mostly represented by a single species. Cyclostome bryozoans are third in importance. The encrusting assemblage is indicative of a welloxygenated, shallow-marine setting of moderate to high energy, and moderate to low turbidity. Several of the taxa show Tethyan affinities. While in composition this fauna is in agreement with other Early Cretaceous hard-substrate faunas, unlike most other cases solitary organisms are strongly predominant, in both diversity and abundance, over colonial species, resulting in a characteristic encrusting fauna strongly dominated by aggregated oysters and serpulids.
Fil: Luci, Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Lazo, Dario Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Cichowolski, Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
9th International Symposium on the Cretaceous System
Ankara
Turquía
Middle East Technical University
Materia
Encruster
paleoecology
Early Cretaceous
Neuquén Basin
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:11336/243012
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/243012
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implicationsLuci, LeticiaLazo, Dario GustavoCichowolski, MarcelaEncrusterpaleoecologyEarly CretaceousNeuquén Basinhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Agrio Formation (late Valanginian to earliest Barremian) of the Neuquén Basin (Argentina) presents diverse marine mollusk assemblages. Hard substrate faunas, however, have been given little attention. Shells of three cephalopods and two bivalve basibiont genera were examined for encrusters, in order to characterize and describe them. Nineteen encrusting taxa were found. Encrusting bivalves were represented by a gryphaeid oyster and a plicatuliid, while byssate one comprised mytilids and anomiids. Six serpulids and one sabellid polychaete worms were recognized. Bryozoans comprised five cyclostomes, and one cheilostome. Agglutinated foraminifers are represented by one species, and a single coral specimen was also found. Oysters are overwhelmingly dominant, usually exceeding 70% of the fauna. Serpulids are a distant second in abundance, mostly represented by a single species. Cyclostome bryozoans are third in importance. The encrusting assemblage is indicative of a welloxygenated, shallow-marine setting of moderate to high energy, and moderate to low turbidity. Several of the taxa show Tethyan affinities. While in composition this fauna is in agreement with other Early Cretaceous hard-substrate faunas, unlike most other cases solitary organisms are strongly predominant, in both diversity and abundance, over colonial species, resulting in a characteristic encrusting fauna strongly dominated by aggregated oysters and serpulids.Fil: Luci, Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Lazo, Dario Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Cichowolski, Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina9th International Symposium on the Cretaceous SystemAnkaraTurquíaMiddle East Technical UniversityMiddle East Technical University2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectSimposioBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/243012Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications; 9th International Symposium on the Cretaceous System; Ankara; Turquía; 2013; 120-120CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://cretaceous.ru/files/pub/collections/anthology/cretaceous9_2013_abstract_book.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 Técnicas2025-09-03T10:09:25Zoai:ri.conicet.gov.ar:11336/243012instacron: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 10:09:25.958CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications
title Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications
spellingShingle Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications
Luci, Leticia
Encruster
paleoecology
Early Cretaceous
Neuquén Basin
title_short Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications
title_full Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications
title_fullStr Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications
title_full_unstemmed Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications
title_sort Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications
dc.creator.none.fl_str_mv Luci, Leticia
Lazo, Dario Gustavo
Cichowolski, Marcela
author Luci, Leticia
author_facet Luci, Leticia
Lazo, Dario Gustavo
Cichowolski, Marcela
author_role author
author2 Lazo, Dario Gustavo
Cichowolski, Marcela
author2_role author
author
dc.subject.none.fl_str_mv Encruster
paleoecology
Early Cretaceous
Neuquén Basin
topic Encruster
paleoecology
Early Cretaceous
Neuquén Basin
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 Agrio Formation (late Valanginian to earliest Barremian) of the Neuquén Basin (Argentina) presents diverse marine mollusk assemblages. Hard substrate faunas, however, have been given little attention. Shells of three cephalopods and two bivalve basibiont genera were examined for encrusters, in order to characterize and describe them. Nineteen encrusting taxa were found. Encrusting bivalves were represented by a gryphaeid oyster and a plicatuliid, while byssate one comprised mytilids and anomiids. Six serpulids and one sabellid polychaete worms were recognized. Bryozoans comprised five cyclostomes, and one cheilostome. Agglutinated foraminifers are represented by one species, and a single coral specimen was also found. Oysters are overwhelmingly dominant, usually exceeding 70% of the fauna. Serpulids are a distant second in abundance, mostly represented by a single species. Cyclostome bryozoans are third in importance. The encrusting assemblage is indicative of a welloxygenated, shallow-marine setting of moderate to high energy, and moderate to low turbidity. Several of the taxa show Tethyan affinities. While in composition this fauna is in agreement with other Early Cretaceous hard-substrate faunas, unlike most other cases solitary organisms are strongly predominant, in both diversity and abundance, over colonial species, resulting in a characteristic encrusting fauna strongly dominated by aggregated oysters and serpulids.
Fil: Luci, Leticia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Lazo, Dario Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Cichowolski, Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
9th International Symposium on the Cretaceous System
Ankara
Turquía
Middle East Technical University
description The Agrio Formation (late Valanginian to earliest Barremian) of the Neuquén Basin (Argentina) presents diverse marine mollusk assemblages. Hard substrate faunas, however, have been given little attention. Shells of three cephalopods and two bivalve basibiont genera were examined for encrusters, in order to characterize and describe them. Nineteen encrusting taxa were found. Encrusting bivalves were represented by a gryphaeid oyster and a plicatuliid, while byssate one comprised mytilids and anomiids. Six serpulids and one sabellid polychaete worms were recognized. Bryozoans comprised five cyclostomes, and one cheilostome. Agglutinated foraminifers are represented by one species, and a single coral specimen was also found. Oysters are overwhelmingly dominant, usually exceeding 70% of the fauna. Serpulids are a distant second in abundance, mostly represented by a single species. Cyclostome bryozoans are third in importance. The encrusting assemblage is indicative of a welloxygenated, shallow-marine setting of moderate to high energy, and moderate to low turbidity. Several of the taxa show Tethyan affinities. While in composition this fauna is in agreement with other Early Cretaceous hard-substrate faunas, unlike most other cases solitary organisms are strongly predominant, in both diversity and abundance, over colonial species, resulting in a characteristic encrusting fauna strongly dominated by aggregated oysters and serpulids.
publishDate 2013
dc.date.none.fl_str_mv 2013
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/11336/243012
Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications; 9th International Symposium on the Cretaceous System; Ankara; Turquía; 2013; 120-120
CONICET Digital
CONICET
url http://hdl.handle.net/11336/243012
identifier_str_mv Early Cretaceous encrusting faunas from the Neuquén Basin west-central Argentina and their palaeocological implications; 9th International Symposium on the Cretaceous System; Ankara; Turquía; 2013; 120-120
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://cretaceous.ru/files/pub/collections/anthology/cretaceous9_2013_abstract_book.pdf
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
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Middle East Technical University
publisher.none.fl_str_mv Middle East Technical University
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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