Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRJ |
Texto Completo: | http://hdl.handle.net/11422/3324 |
Resumo: | Since its original description as a feather belonging to a basal bird, the phylogenetic position of Praeornis sharovi was debated. It was considered as belonging to a bird, a cycad leaf, or as a ‘transitional’ integumentary structure between reptile scales and bird feathers. Recently, a basal enantiornithine bird was collected in Early Cretaceous beds of Brazil. This specimen shows very well-preserved rachis-dominated tail feathers with a very thick rachis and thick and rigid barbules. These features are present in Praeornis, suggesting that this fossil may be interpreted as the tail feather of a basal bird. In this way, Praeornis constitutes one of the oldest records of rachis-dominated feathers in the world. Rachis-dominated tail feathers, including that of Praeornis appear to be rigid paired structures not performed for aerodynamical purposes, suggesting that may be important in body balance. |
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Agnolín, Federico L.Rozadilla, SebastiánCarvalho, Ismar de Souza2017-12-15T17:06:12Z2023-11-30T03:02:30Z2017-12-11Agnolín, F.L.; Rodazilla, S. & Carvalho, I.S. 2017. Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan. Historical Biology, 2017. https://doi.org/10.1080/08912963.2017.14131020891-2963http://hdl.handle.net/11422/332410.1080/08912963.2017.1413102Since its original description as a feather belonging to a basal bird, the phylogenetic position of Praeornis sharovi was debated. It was considered as belonging to a bird, a cycad leaf, or as a ‘transitional’ integumentary structure between reptile scales and bird feathers. Recently, a basal enantiornithine bird was collected in Early Cretaceous beds of Brazil. This specimen shows very well-preserved rachis-dominated tail feathers with a very thick rachis and thick and rigid barbules. These features are present in Praeornis, suggesting that this fossil may be interpreted as the tail feather of a basal bird. In this way, Praeornis constitutes one of the oldest records of rachis-dominated feathers in the world. Rachis-dominated tail feathers, including that of Praeornis appear to be rigid paired structures not performed for aerodynamical purposes, suggesting that may be important in body balance.Submitted by Ismar Carvalho (ismar@geologia.ufrj.br) on 2017-12-15T10:01:49Z No. of bitstreams: 1 Praeornis sharovi.pdf: 1011332 bytes, checksum: a184c2bf28f3179c0666467a331b5269 (MD5)Approved for entry into archive by Samantha Eunice de Miranda M. Pontes (samantha@sibi.ufrj.br) on 2017-12-15T17:06:12Z (GMT) No. of bitstreams: 1 Praeornis sharovi.pdf: 1011332 bytes, checksum: a184c2bf28f3179c0666467a331b5269 (MD5)Made available in DSpace on 2017-12-15T17:06:12Z (GMT). No. of bitstreams: 1 Praeornis sharovi.pdf: 1011332 bytes, checksum: a184c2bf28f3179c0666467a331b5269 (MD5) Previous issue date: 2017-12-11engTaylor & FrancisEstados unidosInstituto de GeociênciasHistorical BiologyAn error occurred getting the license - uri.info:eu-repo/semantics/openAccessCNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIASPraeornisCratoavisFossil featherFóssil de penaPaleontologiaPaleobiologiaPraeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstaninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article115abertoreponame:Repositório Institucional da UFRJinstname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJORIGINALPraeornis sharovi.pdfPraeornis sharovi.pdfapplication/pdf1011332http://pantheon.ufrj.br:80/bitstream/11422/3324/1/Praeornis+sharovi.pdfa184c2bf28f3179c0666467a331b5269MD51LICENSElicense.txtlicense.txttext/plain; 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dc.title.en.fl_str_mv |
Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan |
title |
Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan |
spellingShingle |
Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan Agnolín, Federico L. CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS Praeornis Cratoavis Fossil feather Fóssil de pena Paleontologia Paleobiologia |
title_short |
Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan |
title_full |
Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan |
title_fullStr |
Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan |
title_full_unstemmed |
Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan |
title_sort |
Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan |
author |
Agnolín, Federico L. |
author_facet |
Agnolín, Federico L. Rozadilla, Sebastián Carvalho, Ismar de Souza |
author_role |
author |
author2 |
Rozadilla, Sebastián Carvalho, Ismar de Souza |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Agnolín, Federico L. Rozadilla, Sebastián Carvalho, Ismar de Souza |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS |
topic |
CNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS Praeornis Cratoavis Fossil feather Fóssil de pena Paleontologia Paleobiologia |
dc.subject.por.fl_str_mv |
Praeornis Cratoavis Fossil feather Fóssil de pena Paleontologia Paleobiologia |
description |
Since its original description as a feather belonging to a basal bird, the phylogenetic position of Praeornis sharovi was debated. It was considered as belonging to a bird, a cycad leaf, or as a ‘transitional’ integumentary structure between reptile scales and bird feathers. Recently, a basal enantiornithine bird was collected in Early Cretaceous beds of Brazil. This specimen shows very well-preserved rachis-dominated tail feathers with a very thick rachis and thick and rigid barbules. These features are present in Praeornis, suggesting that this fossil may be interpreted as the tail feather of a basal bird. In this way, Praeornis constitutes one of the oldest records of rachis-dominated feathers in the world. Rachis-dominated tail feathers, including that of Praeornis appear to be rigid paired structures not performed for aerodynamical purposes, suggesting that may be important in body balance. |
publishDate |
2017 |
dc.date.accessioned.fl_str_mv |
2017-12-15T17:06:12Z |
dc.date.issued.fl_str_mv |
2017-12-11 |
dc.date.available.fl_str_mv |
2023-11-30T03:02:30Z |
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.citation.fl_str_mv |
Agnolín, F.L.; Rodazilla, S. & Carvalho, I.S. 2017. Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan. Historical Biology, 2017. https://doi.org/10.1080/08912963.2017.1413102 |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/11422/3324 |
dc.identifier.issn.pt_BR.fl_str_mv |
0891-2963 |
dc.identifier.doi.pt_BR.fl_str_mv |
10.1080/08912963.2017.1413102 |
identifier_str_mv |
Agnolín, F.L.; Rodazilla, S. & Carvalho, I.S. 2017. Praeornis sharovi Rautian, 1978 a fossil feather from the early Late Jurassic of Kazakhstan. Historical Biology, 2017. https://doi.org/10.1080/08912963.2017.1413102 0891-2963 10.1080/08912963.2017.1413102 |
url |
http://hdl.handle.net/11422/3324 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Historical Biology |
dc.rights.driver.fl_str_mv |
An error occurred getting the license - uri. info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
An error occurred getting the license - uri. |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Taylor & Francis |
dc.publisher.country.fl_str_mv |
Estados unidos |
dc.publisher.department.fl_str_mv |
Instituto de Geociências |
publisher.none.fl_str_mv |
Taylor & Francis |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRJ instname:Universidade Federal do Rio de Janeiro (UFRJ) instacron:UFRJ |
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Universidade Federal do Rio de Janeiro (UFRJ) |
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UFRJ |
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UFRJ |
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Repositório Institucional da UFRJ |
collection |
Repositório Institucional da UFRJ |
bitstream.url.fl_str_mv |
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repository.name.fl_str_mv |
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