Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE China

The Huajiying Formation contains the earliest deposits of the Jehol Biota, representing the world’s second oldest avifauna. This avifauna includes the early confuciusornithid Eoconfuciusornis zhengi, the oldest occurrence of this clade and one of the earliest divergences of pygostylian birds. Althou...

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Detalles Bibliográficos
Autores: Navalón, Guillermo, Meng, Qingjin, Marugán Lobón, Jesús Carlos, Zhang, Yuguang, Wang, Baopeng, Xing, Hai, Liu, Di, Chiappe, Luis M.
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/684666
Acceso en línea:http://hdl.handle.net/10486/684666
https://dx.doi.org/10.1016/j.jseaes.2017.11.005
Access Level:acceso abierto
Palabra clave:Birds
Mesozoic
Jehol
China
Cretaceous
Confuciusornis
Biología y Biomedicina / Biología
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spelling Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE ChinaNavalón, GuillermoMeng, QingjinMarugán Lobón, Jesús CarlosZhang, YuguangWang, BaopengXing, HaiLiu, DiChiappe, Luis M.BirdsMesozoicJeholChinaCretaceousConfuciusornisBiología y Biomedicina / BiologíaThe Huajiying Formation contains the earliest deposits of the Jehol Biota, representing the world’s second oldest avifauna. This avifauna includes the early confuciusornithid Eoconfuciusornis zhengi, the oldest occurrence of this clade and one of the earliest divergences of pygostylian birds. Although E. zhengi shows unique traits, the holotype’s immature age makes comparisons with the better known Confuciusornis sanctus problematic. As a result, the taxonomic validity of E. zhengi is controversial. We describe a small, osteologically adult confuciusornithid from the same deposits as E. zhengi. The new fossil is most similar to E. zhengi but also shares traits with the stratigraphically younger Confuciusornis. The humerus of the new fossil is straighter and more slender, and bears a less dorsally-developed deltopectoral crest compared with similarly-sized and smaller specimens of Confuciusornis. The morphology of the humerus is intermediate between E. zhengi and Confuciusornis and its proximal portion is pierced by a small deltopectoral foramen, absent in the holotype of E. zhengi. However, this foramen is much smaller than in any other confuciusornithid. Shape analyses (geometric morphometrics) of the humerus of confuciusornithids of different ages and representatives of other basal avians and closely-related non-avian theropods supports our observations and indicate that the humeral differences between the holotype of E. zhengi and the new specimen are not easily explained as ontogenetic variation within a single species. However, the limited number of early confuciursornithids does not allow us to confidently interpret such differences as interspecific. Nonetheless, these analyses support the morphological distinctiveness of the early confuciusornithids from the Huajiying Formation and suggest a stepwise acquisition of the unique humeral morphology of ConfuciusornithidaeGN is supported by a PG Scholarship/Studentship from The Alumni Foundation, University of Bristol, UK. JML is supported by the Spanish MINECO, Project CGL-2013-42643. Innovative Team Program of the Beijing Academy of Science and Technology, the Beijing Millions of Talents Project in the New Century, the National Natural Science Foundation of China (No. 41602006), and theBeijing Natural Science Foundation (No. 5174032) provided funding for this researchElsevier Ltd.Departamento de BiologíaFacultad de Ciencias20172017-11-04research articlehttp://purl.org/coar/resource_type/c_2df8fbb1AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/684666https://dx.doi.org/10.1016/j.jseaes.2017.11.005reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6846662026-06-23T12:46:27Z
dc.title.none.fl_str_mv Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE China
title Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE China
spellingShingle Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE China
Navalón, Guillermo
Birds
Mesozoic
Jehol
China
Cretaceous
Confuciusornis
Biología y Biomedicina / Biología
title_short Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE China
title_full Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE China
title_fullStr Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE China
title_full_unstemmed Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE China
title_sort Diversity and evolution of the Confuciusornithidae: Evidence from a new 131- million-year-old specimen from the Huajiying Formation in NE China
dc.creator.none.fl_str_mv Navalón, Guillermo
Meng, Qingjin
Marugán Lobón, Jesús Carlos
Zhang, Yuguang
Wang, Baopeng
Xing, Hai
Liu, Di
Chiappe, Luis M.
author Navalón, Guillermo
author_facet Navalón, Guillermo
Meng, Qingjin
Marugán Lobón, Jesús Carlos
Zhang, Yuguang
Wang, Baopeng
Xing, Hai
Liu, Di
Chiappe, Luis M.
author_role author
author2 Meng, Qingjin
Marugán Lobón, Jesús Carlos
Zhang, Yuguang
Wang, Baopeng
Xing, Hai
Liu, Di
Chiappe, Luis M.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Biología
Facultad de Ciencias
dc.subject.none.fl_str_mv Birds
Mesozoic
Jehol
China
Cretaceous
Confuciusornis
Biología y Biomedicina / Biología
topic Birds
Mesozoic
Jehol
China
Cretaceous
Confuciusornis
Biología y Biomedicina / Biología
description The Huajiying Formation contains the earliest deposits of the Jehol Biota, representing the world’s second oldest avifauna. This avifauna includes the early confuciusornithid Eoconfuciusornis zhengi, the oldest occurrence of this clade and one of the earliest divergences of pygostylian birds. Although E. zhengi shows unique traits, the holotype’s immature age makes comparisons with the better known Confuciusornis sanctus problematic. As a result, the taxonomic validity of E. zhengi is controversial. We describe a small, osteologically adult confuciusornithid from the same deposits as E. zhengi. The new fossil is most similar to E. zhengi but also shares traits with the stratigraphically younger Confuciusornis. The humerus of the new fossil is straighter and more slender, and bears a less dorsally-developed deltopectoral crest compared with similarly-sized and smaller specimens of Confuciusornis. The morphology of the humerus is intermediate between E. zhengi and Confuciusornis and its proximal portion is pierced by a small deltopectoral foramen, absent in the holotype of E. zhengi. However, this foramen is much smaller than in any other confuciusornithid. Shape analyses (geometric morphometrics) of the humerus of confuciusornithids of different ages and representatives of other basal avians and closely-related non-avian theropods supports our observations and indicate that the humeral differences between the holotype of E. zhengi and the new specimen are not easily explained as ontogenetic variation within a single species. However, the limited number of early confuciursornithids does not allow us to confidently interpret such differences as interspecific. Nonetheless, these analyses support the morphological distinctiveness of the early confuciusornithids from the Huajiying Formation and suggest a stepwise acquisition of the unique humeral morphology of Confuciusornithidae
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-11-04
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/684666
https://dx.doi.org/10.1016/j.jseaes.2017.11.005
url http://hdl.handle.net/10486/684666
https://dx.doi.org/10.1016/j.jseaes.2017.11.005
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Ltd.
publisher.none.fl_str_mv Elsevier Ltd.
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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