A basal alvarezsauroid theropod from the early Late Jurassic of Xinjiang, China

Science
Jonah N ChoiniereFenglu Han

Abstract

The fossil record of Jurassic theropod dinosaurs closely related to birds remains poor. A new theropod from the earliest Late Jurassic of western China represents the earliest diverging member of the enigmatic theropod group Alvarezsauroidea and confirms that this group is a basal member of Maniraptora, the clade containing birds and their closest theropod relatives. It extends the fossil record of Alvarezsauroidea by 63 million years and provides evidence for maniraptorans earlier in the fossil record than Archaeopteryx. The new taxon confirms extreme morphological convergence between birds and derived alvarezsauroids and illuminates incipient stages of the highly modified alvarezsaurid forelimb.

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Citations

Sep 2, 2010·Proceedings of the National Academy of Sciences of the United States of America·Zoltán CsikiMark A Norell
Jan 26, 2011·Proceedings of the National Academy of Sciences of the United States of America·Xing XuFenglu Han
May 5, 2011·Proceedings of the National Academy of Sciences of the United States of America·Gareth J Dyke, Darren Naish
Aug 16, 2013·Proceedings. Biological Sciences·Roger B J Benson, Jonah N Choiniere
Mar 16, 2013·Science·Xiaoting ZhengXing Xu
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Dec 17, 2014·Science·Xing XuDavid J Varricchio
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Nov 26, 2015·PloS One·Kohei TanakaFrançois Therrien
Sep 22, 2016·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·João Francisco BotelhoAlexander O Vargas
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Dec 5, 2017·BMC Evolutionary Biology·Christian Foth, Oliver W M Rauhut
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Aug 24, 2017·Die Naturwissenschaften·Ulysse LefèvrePascal Godefroit
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Sep 23, 2018·Scientific Reports·Xiaoting ZhengXing Xu
May 8, 2021·Science·Jonah N ChoiniereRoger B J Benson
Jul 8, 2021·Current Biology : CB·Zichuan QinXing Xu

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