Description and interpretation of Cenozoic vertebrate ichnofossils in Rio Grande do Sul State, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4072/rbp.2013.1.07 http://hdl.handle.net/11449/74296 |
Resumo: | 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. |
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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)Frank, Heinrich TheodorDe Lima, Leonardo GonçalvesPozzebon Gerhard, NicoliCaron, Felipede Carvalho Buchmann, Francisco Sekiguchi [UNESP]Fornari, MileneLopes, Renato Pereira2014-05-27T11:27:32Z2014-05-27T11:27:32Z2013-01-01info: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/openAccess2021-10-23T11:16:43Zoai:repositorio.unesp.br:11449/74296Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T11:16:43Repositório 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 |
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.contributor.author.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 |
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 |
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1797790393363857408 |