Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil

In the neighborhood of the city of Boqueirão do Leão (State of Rio Grande do Sul, Brazil) a set of three big-sized tunnels has been found. One of the tunnels is only partially filled with sand and accessible along its entire length. It is horizontal, slightly sinuous, 36 m long, up to 4.2 m wide and...

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Autores: Frank, Heinrich Theodor, De Lima, Leonardo Gonçalves, Pozzebon Gerhard, Nicoli, Caron, Felipe, de Carvalho Buchmann, Francisco Sekiguchi [UNESP], Fornari, Milene, Lopes, Renato Pereira
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:Brasil
Recursos:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/74296
Acesso em linha:http://dx.doi.org/10.4072/rbp.2013.1.07
http://hdl.handle.net/11449/74296
Access Level:acceso abierto
Palavra-chave:Burrows
Ground sloths
Ichnofossils
Megafauna
Paleovertebrates
South america
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spelling Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, BrazilBurrowsGround slothsIchnofossilsMegafaunaPaleovertebratesSouth americaIn the neighborhood of the city of Boqueirão do Leão (State of Rio Grande do Sul, Brazil) a set of three big-sized tunnels has been found. One of the tunnels is only partially filled with sand and accessible along its entire length. It is horizontal, slightly sinuous, 36 m long, up to 4.2 m wide and up to 2.0 m high. The surface morphology of the walls is composed of anthropogenic marks, speleothems, black incrustations and traces like digging scratches and smoothed surfaces. The 2nd tunnel has its entrance blocked by sand and sandstone cobbles, but the end of the tunnel is only partially clogged and therefore accessible. This accessible portion is 12 m long, 3 m wide and 1.5 m high. The 3rd tunnel is completely filled and collapsed and is nowadays only indicated by concave roof features at its end. The general features of the tunnel system and the analysis of the surface morphology of the walls of the accessible portions permit to conclude that the tunnels were produced by ground sloths of the Cenozoic South American megafauna. The size of the tunnels suggests that its excavation was gradually carried out by successive generations of sloth herds, and not by a single individual animal. The primary function of the tunnels probably was not protection from predators, which had easy access to structures of this size, but to shelter during a drier climate. However, it is not yet possible to relate the tunnels to a specific ground sloth genus, a task that depends on the discovery of better-preserved tunnel systems. © 2013 by the Sociedade Brasileira de Paleontologia.Instituto de Geociências UFRGS Campus do Vale, 91501-970, Cx.P. 15001, Porto Alegre, RSUniversidade Federal do Pampa, Av. Pedro Anunciação, s/n, 96570-000, Caçapava do Sul, RSLaboratório de Estratigrafia e Paleontologia UNESP Unidade São Vicente, Campus do Litoral Paulista, 11330-900, São Vicente, SPInstituto de Geociências USP, Rua do Lago, 05508-080, São Paulo, SPInstituto de Oceanografia FURG Campus Carreiros, Av. Itália, km 08, 96201-900, Rio Grande, RSLaboratório de Estratigrafia e Paleontologia UNESP Unidade São Vicente, Campus do Litoral Paulista, 11330-900, São Vicente, SPUniversidade Federal do Rio Grande do Sul (UFRGS)Universidade Federal do Pampa (UNIPAMPA)Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Universidade Federal do Rio Grande (FURG)2014-05-27T11:27:32Z2014-05-27T11:27:32Z2013-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article83-96http://dx.doi.org/10.4072/rbp.2013.1.07Revista Brasileira de Paleontologia, v. 16, n. 1, p. 83-96, 2013.1519-7530http://hdl.handle.net/11449/7429610.4072/rbp.2013.1.07WOS:0003322659000072-s2.0-848778547535035802884369829Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Paleontologia0.5410,333info:eu-repo/semantics/openAccessFrank, Heinrich TheodorDe Lima, Leonardo GonçalvesPozzebon Gerhard, NicoliCaron, Felipede Carvalho Buchmann, Francisco Sekiguchi [UNESP]Fornari, MileneLopes, Renato Pereira2024-10-24T12:55:45Zoai:repositorio.unesp.br:11449/74296Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-10-24T12:55:45Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil
title Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil
spellingShingle Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil
Frank, Heinrich Theodor
Burrows
Ground sloths
Ichnofossils
Megafauna
Paleovertebrates
South america
title_short Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil
title_full Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil
title_fullStr Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil
title_full_unstemmed Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil
title_sort Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil
dc.creator.none.fl_str_mv Frank, Heinrich Theodor
De Lima, Leonardo Gonçalves
Pozzebon Gerhard, Nicoli
Caron, Felipe
de Carvalho Buchmann, Francisco Sekiguchi [UNESP]
Fornari, Milene
Lopes, Renato Pereira
author Frank, Heinrich Theodor
author_facet Frank, Heinrich Theodor
De Lima, Leonardo Gonçalves
Pozzebon Gerhard, Nicoli
Caron, Felipe
de Carvalho Buchmann, Francisco Sekiguchi [UNESP]
Fornari, Milene
Lopes, Renato Pereira
author_role author
author2 De Lima, Leonardo Gonçalves
Pozzebon Gerhard, Nicoli
Caron, Felipe
de Carvalho Buchmann, Francisco Sekiguchi [UNESP]
Fornari, Milene
Lopes, Renato Pereira
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal do Rio Grande do Sul (UFRGS)
Universidade Federal do Pampa (UNIPAMPA)
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Universidade Federal do Rio Grande (FURG)
dc.subject.por.fl_str_mv Burrows
Ground sloths
Ichnofossils
Megafauna
Paleovertebrates
South america
topic Burrows
Ground sloths
Ichnofossils
Megafauna
Paleovertebrates
South america
description In the neighborhood of the city of Boqueirão do Leão (State of Rio Grande do Sul, Brazil) a set of three big-sized tunnels has been found. One of the tunnels is only partially filled with sand and accessible along its entire length. It is horizontal, slightly sinuous, 36 m long, up to 4.2 m wide and up to 2.0 m high. The surface morphology of the walls is composed of anthropogenic marks, speleothems, black incrustations and traces like digging scratches and smoothed surfaces. The 2nd tunnel has its entrance blocked by sand and sandstone cobbles, but the end of the tunnel is only partially clogged and therefore accessible. This accessible portion is 12 m long, 3 m wide and 1.5 m high. The 3rd tunnel is completely filled and collapsed and is nowadays only indicated by concave roof features at its end. The general features of the tunnel system and the analysis of the surface morphology of the walls of the accessible portions permit to conclude that the tunnels were produced by ground sloths of the Cenozoic South American megafauna. The size of the tunnels suggests that its excavation was gradually carried out by successive generations of sloth herds, and not by a single individual animal. The primary function of the tunnels probably was not protection from predators, which had easy access to structures of this size, but to shelter during a drier climate. However, it is not yet possible to relate the tunnels to a specific ground sloth genus, a task that depends on the discovery of better-preserved tunnel systems. © 2013 by the Sociedade Brasileira de Paleontologia.
publishDate 2013
dc.date.none.fl_str_mv 2013-01-01
2014-05-27T11:27:32Z
2014-05-27T11:27:32Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.4072/rbp.2013.1.07
Revista Brasileira de Paleontologia, v. 16, n. 1, p. 83-96, 2013.
1519-7530
http://hdl.handle.net/11449/74296
10.4072/rbp.2013.1.07
WOS:000332265900007
2-s2.0-84877854753
5035802884369829
url http://dx.doi.org/10.4072/rbp.2013.1.07
http://hdl.handle.net/11449/74296
identifier_str_mv Revista Brasileira de Paleontologia, v. 16, n. 1, p. 83-96, 2013.
1519-7530
10.4072/rbp.2013.1.07
WOS:000332265900007
2-s2.0-84877854753
5035802884369829
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Revista Brasileira de Paleontologia
0.541
0,333
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 83-96
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv repositoriounesp@unesp.br
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score 15,301603

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