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Article: Mosaic evolution in an asymmetrically feathered troodontid dinosaur with transitional features

TitleMosaic evolution in an asymmetrically feathered troodontid dinosaur with transitional features
Authors
Issue Date2017
PublisherNature Publishing Group: Nature Communications. The Journal's web site is located at http://www.nature.com/ncomms/index.html
Citation
Nature Communications, 2017, v. 8, p. 14972 How to Cite?
AbstractAsymmetrical feathers have been associated with flight capability but are also found in species that do not fly, and their appearance was a major event in feather evolution. Among non-avialan theropods, they are only known in microraptorine dromaeosaurids. Here we report a new troodontid, Jianianhualong tengi gen. et sp. nov., from the Lower Cretaceous Jehol Group of China, that has anatomical features that are transitional between long-armed basal troodontids and derived short-armed ones, shedding new light on troodontid character evolution. It indicates that troodontid feathering is similar to Archaeopteryx in having large arm and leg feathers as well as frond-like tail feathering, confirming that these feathering characteristics were widely present among basal paravians. Most significantly, the taxon has the earliest known asymmetrical troodontid feathers, suggesting that feather asymmetry was ancestral to Paraves. This taxon also displays a mosaic distribution of characters like Sinusonasus, another troodontid with transitional anatomical features.
Persistent Identifierhttp://hdl.handle.net/10722/247344
ISSN
2019 Impact Factor: 12.121
2015 SCImago Journal Rankings: 6.539
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXu, X-
dc.contributor.authorCurrie, P-
dc.contributor.authorPittman, MD-
dc.contributor.authorXing, LD-
dc.contributor.authorMeng, QJ-
dc.contributor.authorLü, JC-
dc.contributor.authorHu, DY-
dc.contributor.authorYu, CY-
dc.date.accessioned2017-10-18T08:25:53Z-
dc.date.available2017-10-18T08:25:53Z-
dc.date.issued2017-
dc.identifier.citationNature Communications, 2017, v. 8, p. 14972-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10722/247344-
dc.description.abstractAsymmetrical feathers have been associated with flight capability but are also found in species that do not fly, and their appearance was a major event in feather evolution. Among non-avialan theropods, they are only known in microraptorine dromaeosaurids. Here we report a new troodontid, Jianianhualong tengi gen. et sp. nov., from the Lower Cretaceous Jehol Group of China, that has anatomical features that are transitional between long-armed basal troodontids and derived short-armed ones, shedding new light on troodontid character evolution. It indicates that troodontid feathering is similar to Archaeopteryx in having large arm and leg feathers as well as frond-like tail feathering, confirming that these feathering characteristics were widely present among basal paravians. Most significantly, the taxon has the earliest known asymmetrical troodontid feathers, suggesting that feather asymmetry was ancestral to Paraves. This taxon also displays a mosaic distribution of characters like Sinusonasus, another troodontid with transitional anatomical features.-
dc.languageeng-
dc.publisherNature Publishing Group: Nature Communications. The Journal's web site is located at http://www.nature.com/ncomms/index.html-
dc.relation.ispartofNature Communications-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleMosaic evolution in an asymmetrically feathered troodontid dinosaur with transitional features-
dc.typeArticle-
dc.identifier.emailPittman, MD: mpittman@hku.hk-
dc.identifier.authorityPittman, MD=rp01622-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1038/ncomms14972-
dc.identifier.hkuros280089-
dc.identifier.volume8-
dc.identifier.spage14972-
dc.identifier.epage14972-
dc.identifier.isiWOS:000400420700001-
dc.publisher.placeUnited Kingdom-

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