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	Provedor de dados Nature Precedings (3) Autor Corwin Sullivan (3) Xing Xu (3) Jonah Choiniere (2) David Hone (1) Fenglu Han (1) Fucheng Zhang (1) James Clark (1) Xiaolin Wang (1) Zhonghe Zhou (1) Mais... Palavra-chave Evolutionary Biology (2) Developmental Biology (1) Earth & Environment (1) Ecology (1) Tipo do documento Manuscript (3) Ano 2011 (2) 2008 (1) País United Kingdom (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última A bizarre Jurassic maniraptoran from China with elongate ribbon-like feathers Nature Precedings Fucheng Zhang; Zhonghe Zhou; Xing Xu; Xiaolin Wang; Corwin Sullivan. Recent coelurosaurian discoveries have greatly enriched our knowledge of the dinosaur-bird transition, but all reported taxa close to this transition are from relatively well-known coelurosaurian groups^1-3^. Here we report a new basal avialan, Epidexipteryx hui gen. et sp. nov., from the Middle-Late Jurassic of Inner Mongolia, China. This new species is characterized by an unexpected combination of characters seen in several different theropod groups, particularly the Oviraptorosauria. Phylogenetic analysis shows it to be the sister taxon to Epidendrosaurus^4,5^, forming a new clade at the base of Avialae^6^. Epidexipteryx also possesses two pairs of elongate ribbon-like tail feathers (ETFs), and its limbs lack contour feathers for flight. This finding... Tipo: Manuscript Palavras-chave: Developmental Biology; Ecology; Earth & Environment. Ano: 2008 URL: http://precedings.nature.com/documents/2326/version/1 Comment on "Embryological evidence identifies wing digits in birds as digits 1, 2, and 3." Nature Precedings Xing Xu; Jonah Choiniere; Corwin Sullivan; Fenglu Han. Tamura et al. (Science, 11 Febuary 2011, p. 753) claim that the three avian wing digits should be identified as digits I-III based on new embryological data and suggest that these identifications help to remove the conflict between the paleontological data and developmental data concerning the homology of the avian digits. However, their results are not novel, and the authors fail to address the critical problems relating to this interesting issue. Tipo: Manuscript Palavras-chave: Evolutionary Biology. Ano: 2011 URL: http://precedings.nature.com/documents/6433/version/1 Reply to “Limusaurus and bird digit identity” Nature Precedings Xing Xu; James Clark; Jonah Choiniere; David Hone; Corwin Sullivan. Vargas et al. agree with us that a lateral shift in theropod dinosaur digits occurred prior to the origin of birds, but contend that it occurred as a single “frameshift” with little outward change to the three main digits involved^1^. We consider the digital morphology of Limusaurus, other ceratosaurs, and non-avian tetanurans to provide evidence that the shift was stepwise, and that a stepwise shift better explains theropod manual morphology than a hidden frameshift. Tipo: Manuscript Palavras-chave: Evolutionary Biology. Ano: 2011 URL: http://precedings.nature.com/documents/6375/version/1 Registros recuperados: 3 Primeira ... 1 ... Última

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