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	Provedor de dados Anais da ABC (AABC) (4) Autor CHENG,XIN (4) JIANG,SHUNXING (4) WANG,XIAOLIN (4) LI,NING (2) WANG,QIANG (2) COSTA,FABIANA R. (1) KELLNER,ALEXANDER W. A. (1) KELLNER,ALEXANDER W.A. (1) MENG,XI (1) QIU,RUI (1) RODRIGUES,TAISSA (1) SAYÃO,JULIANA M. (1) ZHANG,JIALIANG (1) ZHANG,XINJUN (1) ZHOU,ZHONGHE (1) Mais... Palavra-chave China (4) Pterosauria (2) Wukongopteridae (2) Cranial crest (1) Jiufotang Formation (1) Jurassic (1) Laiyangosaurus youngi (1) Liaoning (1) Ontogeny (1) Reproductive Biology (1) Saurolophinae (1) Sexual dimorphism (1) Shandong (1) Sinopterus atavismus (1) Upper Cretaceous (1) Wangshi Group (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2019 (2) 2017 (1) 2015 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última A new saurolophine hadrosaurid (Dinosauria: Ornithopoda) from the Upper Cretaceous of Shandong, China Anais da ABC (AABC) ZHANG,JIALIANG; WANG,XIAOLIN; WANG,QIANG; JIANG,SHUNXING; CHENG,XIN; LI,NING; QIU,RUI. ABSTRACT A new saurolophine hadrosaurid, Laiyangosaurus youngi gen. et sp. nov. is described and phylogenetically analyzed based on several cranial elements from the Jingangkou Formation, Wangshi Group, Upper Cretaceous of Laiyang, Shandong, China. Laiyangosaurus youngi differs from other members of the saurolophine clade on the basis of a number of autapomorphies, including a prominent and narrow ridge on the lateral side of the nasal which forms the posterodorsal and posterior margin of the circumnasal depression, a primary ridge that runs along most of the maxillary tooth row that is slightly deflected posteriorly, a retroarticular process of the surangular that is dorsolateroposteriorlly recurved, and orbital margins that are wider than the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Upper Cretaceous; Wangshi Group; Laiyangosaurus youngi; Saurolophinae; Shandong; China. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400503 Eggshell and Histology Provide Insight on the Life History of a Pterosaur with Two Functional Ovaries Anais da ABC (AABC) WANG,XIAOLIN; KELLNER,ALEXANDER W. A.; CHENG,XIN; JIANG,SHUNXING; WANG,QIANG; SAYÃO,JULIANA M.; RODRIGUES,TAISSA; COSTA,FABIANA R.; LI,NING; MENG,XI; ZHOU,ZHONGHE. The counterpart of a previously described non-pterodactyloid pterosaur with an egg revealed the presence of a second egg inside the body cavity of this gravid female. It clearly shows that pterosaurs had two functional oviducts and demonstrates that the reduction of one oviduct was not a prerequisite for developing powered flight, at least in this group. Compositional analysis of one egg suggests the lack of a hard external layer of calcium carbonate. Histological sections of one femur lack medullary bone and further demonstrate that this pterosaur reached reproductive maturity before skeletal maturity. This study shows that pterosaurs laid eggs even smaller than previously thought and had a reproductive strategy more similar to basal reptiles than to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Pterosauria; Wukongopteridae; Reproductive Biology; Jurassic; China. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401599 Premaxillary crest variation within the Wukongopteridae (Reptilia, Pterosauria) and comments on cranial structures in pterosaurs Anais da ABC (AABC) CHENG,XIN; JIANG,SHUNXING; WANG,XIAOLIN; KELLNER,ALEXANDER W.A.. ABSTRACT Cranial crests show considerable variation within the Pterosauria, a group of flying reptiles that developed powered flight. This includes the Wukongopteridae, a clade of non-pterodactyloids, where the presence or absence of such head structures, allied with variation in the pelvic canal, have been regarded as evidence for sexual dimorphism. Here we discuss the cranial crest variation within wukongopterids and briefly report on a new specimen (IVPP V 17957). We also show that there is no significant variation in the anatomy of the pelvis of crested and crestless specimens. We further revisit the discussion regarding the function of cranial structures in pterosaurs and argue that they cannot be dismissed a priori as a valuable tool for species... Tipo: Info:eu-repo/semantics/article Palavras-chave: Wukongopteridae; Pterosauria; Cranial crest; Sexual dimorphism; China. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000100119 New Material of Sinopterus (Pterosauria, Tapejaridae) from the Early Cretaceous Jehol Biota of China Anais da ABC (AABC) ZHANG,XINJUN; JIANG,SHUNXING; CHENG,XIN; WANG,XIAOLIN. 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... Tipo: Info:eu-repo/semantics/article Palavras-chave: Sinopterus atavismus; Ontogeny; Jiufotang Formation; Liaoning; China. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000400513 Registros recuperados: 4 Primeira ... 1 ... Última

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