New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China

Detalhes bibliográficos
Autor(a) principal: ZHANG,XINJUN
Data de Publicação: 2019
Outros Autores: JIANG,SHUNXING, CHENG,XIN, WANG,XIAOLIN
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Anais da Academia Brasileira de Ciências (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400513
Resumo: Abstract: Tapejaridae is a clade of toothless pterosaurs typically characterized by a large nasoantorbital fenestra and a premaxillary crest that extends from the anterior to the posterior part of the skull. Sinopterus dongi was the first reported Chinese tapejarid. Another genus “Huaxiapterus” was described, but it was later on determined that “Huaxiapterus” is in fact an invalid name. Here, we report on a new juvenile specimen of Sinopterus atavismus from the Jiufotang Formation of western Liaoning, China, and revise the diagnosis of this species. Sinopterus atavismus does not present a square-like crest. Moreover the feature that groove in the ventral part of the second or third phalanx of manual digit IV is not diagnostic of the species. In the new material, the skull preserves a pointed process in the middle part of the dorsal margin of the premaxillary crest, which is different from other Chinese tapejarids. Considering the new specimen is known from a large skeleton that differed from the holotype, this difference may be related to ontogeny, as the premaxillary crest of the holotype is short and does not extend as long as that of the new specimen.
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spelling New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of ChinaSinopterus atavismusontogenyJiufotang FormationLiaoningChinaAbstract: Tapejaridae is a clade of toothless pterosaurs typically characterized by a large nasoantorbital fenestra and a premaxillary crest that extends from the anterior to the posterior part of the skull. Sinopterus dongi was the first reported Chinese tapejarid. Another genus “Huaxiapterus” was described, but it was later on determined that “Huaxiapterus” is in fact an invalid name. Here, we report on a new juvenile specimen of Sinopterus atavismus from the Jiufotang Formation of western Liaoning, China, and revise the diagnosis of this species. Sinopterus atavismus does not present a square-like crest. Moreover the feature that groove in the ventral part of the second or third phalanx of manual digit IV is not diagnostic of the species. In the new material, the skull preserves a pointed process in the middle part of the dorsal margin of the premaxillary crest, which is different from other Chinese tapejarids. Considering the new specimen is known from a large skeleton that differed from the holotype, this difference may be related to ontogeny, as the premaxillary crest of the holotype is short and does not extend as long as that of the new specimen.Academia Brasileira de Ciências2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400513Anais da Academia Brasileira de Ciências v.91 suppl.2 2019reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/0001-376520192018756info:eu-repo/semantics/openAccessZHANG,XINJUNJIANG,SHUNXINGCHENG,XINWANG,XIAOLINeng2019-06-24T00:00:00Zoai:scielo:S0001-37652019000400513Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2019-06-24T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false
dc.title.none.fl_str_mv New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China
title New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China
spellingShingle New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China
ZHANG,XINJUN
Sinopterus atavismus
ontogeny
Jiufotang Formation
Liaoning
China
title_short New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China
title_full New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China
title_fullStr New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China
title_full_unstemmed New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China
title_sort New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China
author ZHANG,XINJUN
author_facet ZHANG,XINJUN
JIANG,SHUNXING
CHENG,XIN
WANG,XIAOLIN
author_role author
author2 JIANG,SHUNXING
CHENG,XIN
WANG,XIAOLIN
author2_role author
author
author
dc.contributor.author.fl_str_mv ZHANG,XINJUN
JIANG,SHUNXING
CHENG,XIN
WANG,XIAOLIN
dc.subject.por.fl_str_mv Sinopterus atavismus
ontogeny
Jiufotang Formation
Liaoning
China
topic Sinopterus atavismus
ontogeny
Jiufotang Formation
Liaoning
China
description Abstract: Tapejaridae is a clade of toothless pterosaurs typically characterized by a large nasoantorbital fenestra and a premaxillary crest that extends from the anterior to the posterior part of the skull. Sinopterus dongi was the first reported Chinese tapejarid. Another genus “Huaxiapterus” was described, but it was later on determined that “Huaxiapterus” is in fact an invalid name. Here, we report on a new juvenile specimen of Sinopterus atavismus from the Jiufotang Formation of western Liaoning, China, and revise the diagnosis of this species. Sinopterus atavismus does not present a square-like crest. Moreover the feature that groove in the ventral part of the second or third phalanx of manual digit IV is not diagnostic of the species. In the new material, the skull preserves a pointed process in the middle part of the dorsal margin of the premaxillary crest, which is different from other Chinese tapejarids. Considering the new specimen is known from a large skeleton that differed from the holotype, this difference may be related to ontogeny, as the premaxillary crest of the holotype is short and does not extend as long as that of the new specimen.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400513
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dc.language.iso.fl_str_mv eng
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dc.relation.none.fl_str_mv 10.1590/0001-376520192018756
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dc.publisher.none.fl_str_mv Academia Brasileira de Ciências
publisher.none.fl_str_mv Academia Brasileira de Ciências
dc.source.none.fl_str_mv Anais da Academia Brasileira de Ciências v.91 suppl.2 2019
reponame:Anais da Academia Brasileira de Ciências (Online)
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