Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.

A complex trace fossil that requires a three-dimensional (3D) reconstruction is described and interpreted. The specimens studied are assigned to a new ichnospecies (Hillichnus agrioensis) of Hillichnus Bromley et al., 2003. Most of them are uncollectable and a compound iconotype was designed to char...

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Detalhes bibliográficos
Autores: Pazos, Pablo Jose, Fernández, Diana Elizabeth
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2010
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositório:CONICET Digital (CONICET)
Idioma:inglês
OAI Identifier:oai:ri.conicet.gov.ar:11336/68477
Acesso em linha:http://hdl.handle.net/11336/68477
Access Level:Acceso aberto
Palavra-chave:COMPOUND TRACE FOSSIL
HILLICHNUS
LOWER CRETACEOUS
NEUQUÉN BASIN
SHALLOW MARINE
ICHNOLOGY
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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network_name_str Argentina
repository_id_str
spelling Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.Pazos, Pablo JoseFernández, Diana ElizabethCOMPOUND TRACE FOSSILHILLICHNUSLOWER CRETACEOUSNEUQUÉN BASINSHALLOW MARINEICHNOLOGYhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A complex trace fossil that requires a three-dimensional (3D) reconstruction is described and interpreted. The specimens studied are assigned to a new ichnospecies (Hillichnus agrioensis) of Hillichnus Bromley et al., 2003. Most of them are uncollectable and a compound iconotype was designed to characterise the new ichnospecies. The three-dimensional trace fossil has been recorded in marginal-marine deposits close to the top of the Agrio Formation (Lower Cretaceous of Neuquén Basin, Argentina). The new ichnospecies shows a different pattern of feeding than H. lobosensis Bromley et al., 2003, and records defaecation downward in the deeper preservational level (level 4). Feather-like structures (level 2) that typify the ichnogenus also record the activity of an inhalant siphon and indicate a retractile movement. The vertical shafts (level 1) are scarcely recorded. Aligned double rings also document the infaunal habit of the tellinid bivalves that are considered the most likely producers of the trace. It is clear that when only level 2 is exposed, in some cases this form can be assigned to Jamesonichnites heinbergi Dam 1990a consequently, this ichnospecies is interconnected with more than one ichnogenus. Vertical projections recorded in branches differ from the type ichnospecies H. lobosensis Bromley et al., 2003. The occurrence in marginal-marine facies is congruent with the record of Jamesonichnites but not common in the type species and similar to those more frequent in deep-sea deposits (e.g. Polykampton alpinum Ooster, 1869).Fil: Pazos, Pablo Jose. 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: Fernández, Diana Elizabeth. 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"; ArgentinaUniversity of Warsaw. Institute of Geology2010-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/68477Pazos, Pablo Jose; Fernández, Diana Elizabeth; Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.; University of Warsaw. Institute of Geology; Acta Geologica Polonica; 60; 1; 3-2010; 105-1180001-5709CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://geojournals.pgi.gov.pl/agp/article/view/9824info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:38:19Zoai:ri.conicet.gov.ar:11336/68477instacron: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:34982024-05-08 13:38:19.954CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.
title Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.
spellingShingle Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.
Pazos, Pablo Jose
COMPOUND TRACE FOSSIL
HILLICHNUS
LOWER CRETACEOUS
NEUQUÉN BASIN
SHALLOW MARINE
ICHNOLOGY
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
title_short Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.
title_full Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.
title_fullStr Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.
title_full_unstemmed Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.
title_sort Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.
dc.creator.none.fl_str_mv Pazos, Pablo Jose
Fernández, Diana Elizabeth
author Pazos, Pablo Jose
author_facet Pazos, Pablo Jose
Fernández, Diana Elizabeth
author_role author
author2 Fernández, Diana Elizabeth
author2_role author
dc.subject.none.fl_str_mv COMPOUND TRACE FOSSIL
HILLICHNUS
LOWER CRETACEOUS
NEUQUÉN BASIN
SHALLOW MARINE
ICHNOLOGY
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic COMPOUND TRACE FOSSIL
HILLICHNUS
LOWER CRETACEOUS
NEUQUÉN BASIN
SHALLOW MARINE
ICHNOLOGY
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
description A complex trace fossil that requires a three-dimensional (3D) reconstruction is described and interpreted. The specimens studied are assigned to a new ichnospecies (Hillichnus agrioensis) of Hillichnus Bromley et al., 2003. Most of them are uncollectable and a compound iconotype was designed to characterise the new ichnospecies. The three-dimensional trace fossil has been recorded in marginal-marine deposits close to the top of the Agrio Formation (Lower Cretaceous of Neuquén Basin, Argentina). The new ichnospecies shows a different pattern of feeding than H. lobosensis Bromley et al., 2003, and records defaecation downward in the deeper preservational level (level 4). Feather-like structures (level 2) that typify the ichnogenus also record the activity of an inhalant siphon and indicate a retractile movement. The vertical shafts (level 1) are scarcely recorded. Aligned double rings also document the infaunal habit of the tellinid bivalves that are considered the most likely producers of the trace. It is clear that when only level 2 is exposed, in some cases this form can be assigned to Jamesonichnites heinbergi Dam 1990a consequently, this ichnospecies is interconnected with more than one ichnogenus. Vertical projections recorded in branches differ from the type ichnospecies H. lobosensis Bromley et al., 2003. The occurrence in marginal-marine facies is congruent with the record of Jamesonichnites but not common in the type species and similar to those more frequent in deep-sea deposits (e.g. Polykampton alpinum Ooster, 1869).
publishDate 2010
dc.date.none.fl_str_mv 2010-03
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/11336/68477
Pazos, Pablo Jose; Fernández, Diana Elizabeth; Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.; University of Warsaw. Institute of Geology; Acta Geologica Polonica; 60; 1; 3-2010; 105-118
0001-5709
CONICET Digital
CONICET
url http://hdl.handle.net/11336/68477
identifier_str_mv Pazos, Pablo Jose; Fernández, Diana Elizabeth; Three-dimensionally integrated trace fossils from shallow-marine deposits in the Lower Cretaceous of the Neuquén Basin (Argentina): Hillichnus agrioensis isp. nov.; University of Warsaw. Institute of Geology; Acta Geologica Polonica; 60; 1; 3-2010; 105-118
0001-5709
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://geojournals.pgi.gov.pl/agp/article/view/9824
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 University of Warsaw. Institute of Geology
publisher.none.fl_str_mv University of Warsaw. Institute of Geology
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15.198674

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