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dc.contributor.author
Pazos, Pablo Jose

dc.contributor.author
Gutiérrez, Carolina

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Fernández, Diana Elizabeth

dc.date.available
2024-09-24T09:18:26Z
dc.date.issued
2016
dc.identifier.citation
Herradurichnus, Gyrochorte and Daedalus from the Balcarce Formation (Silurian of the Tandilia System, Argentina) revisited; 4th International Congress on Ichnology; Idanha-a-Nova; Portugal; 2016; 104-105
dc.identifier.isbn
978-989-97888-1-7
dc.identifier.uri
http://hdl.handle.net/11336/244853
dc.description.abstract
The Balcarce Formation is a tide-dominated unit outcropping in the TandiliaSystem which contains abundant ichnofossils firstly studied by Borrello (1966).Original assignments in the unit like Cruziana and Arthrophycus remainindisputable and suggest a Late Ordovician lower Silurian age. Conversely,others were later reassigned to other ichnogenera. In particular the materialreexamined in the field (Cabo Corrientes locality) received the attention ofPoiré and del Valle (1996) and Seilacher et al. (2003) that introduced newassignments (e.g. Arenicolites, Didymaulichnus, Diplichnites andDiplocraterion). Interestingly, some trace fossils present there were analyzedand also discussed or reassigned in these or other works, sometimesinformally (e.g. Heimdallia and Selenichnites). One unusual case is the materialoriginally assigned to Palaeophycus that was later reassigned to Scolicia,Gyrochorte or Heimdallia. Some field specimens (fig. 1) partially resembleArthrophycus brogniartii but differ in the variable course (winding, irregularor angularly meandering), subtriangular shape, variable width andasymmetrical ribs. These features do not fit in Arthrophycus and probablyneither in the other previously attributed ichnogenera. Herradurichnus isrecorded as the classical horse-shoe form, but also crescent and subtriangularin shape (fig. 2); variable incised forms suggest different producers thanxiphosuran-like animals, probably a worm-like animal. The horizontaldisplacement of the Daedalus examples resembles the activity of siphons (fig.3), like some sections of Hillichnus. Herradurichnus and Didymaulichnus arecross cut by Arthrophycus-like trace fossils. Finally, other trace fossils aremeniscate endichnial forms without walls and showing basal marks.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
International Ichnological Association
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ICHNOTAXONOMY
dc.subject
LOWER PALEOZOIC
dc.subject
GONDWANA
dc.subject
BALCARCE FORMATION
dc.subject
ARGENTINA
dc.subject.classification
Geología

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Ciencias de la Tierra y relacionadas con el Medio Ambiente

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CIENCIAS NATURALES Y EXACTAS

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Paleontología

dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente

dc.subject.classification
CIENCIAS NATURALES Y EXACTAS

dc.title
Herradurichnus, Gyrochorte and Daedalus from the Balcarce Formation (Silurian of the Tandilia System, Argentina) revisited
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2024-07-26T13:36:53Z
dc.journal.pagination
104-105
dc.journal.pais
Portugal

dc.journal.ciudad
Lisboa
dc.description.fil
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"; Argentina
dc.description.fil
Fil: Gutiérrez, Carolina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Geológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: 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"; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.palass.org/meetings-events/future-meetings/4th-international-congres
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.naturtejo.com/ficheiros/conteudos/files/ichnia16livro.pdf
dc.conicet.rol
Autor

dc.conicet.rol
Autor

dc.conicet.rol
Autor

dc.coverage
Internacional
dc.type.subtype
Congreso
dc.description.nombreEvento
4th International Congress on Ichnology
dc.date.evento
2016-05-06
dc.description.ciudadEvento
Idanha-a-Nova
dc.description.paisEvento
Portugal

dc.type.publicacion
Book
dc.description.institucionOrganizadora
International Ichnological Association
dc.source.libro
4th International Congress on Ichnology
dc.date.eventoHasta
2016-05-09
dc.type
Congreso
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