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Intraskeletal histovariability, allometric growth patterns, and their functional implications in bird-like dinosaurs

Published on Dec 1, 2018in Scientific Reports4.01
· DOI :10.1038/s41598-017-18218-9
Edina Prondvai8
Estimated H-index: 8
(UGent: Ghent University),
Pascal Godefroit20
Estimated H-index: 20
(Royal Belgian Institute of Natural Sciences)
+ 1 AuthorsDongyu Hu4
Estimated H-index: 4
(Ministry of Land and Resources of the People's Republic of China)
Abstract
With their elongated forelimbs and variable aerial skills, paravian dinosaurs, a clade also comprising modern birds, are in the hotspot of vertebrate evolutionary research. Inferences on the early evolution of flight largely rely on bone and feather morphology, while osteohistological traits are usually studied to explore life-history characteristics. By sampling and comparing multiple homologous fore- and hind limb elements, we integrate for the first time qualitative and quantitative osteohistological approaches to get insight into the intraskeletal growth dynamics and their functional implications in five paravian dinosaur taxa, Anchiornis, Aurornis, Eosinopteryx, Serikornis, and Jeholornis. Our qualitative assessment implies a considerable diversity in allometric/isometric growth patterns among these paravians. Quantitative analyses show that neither taxa nor homologous elements have characteristic histology, and that ontogenetic stage, element size and the newly introduced relative element precocity only partially explain the diaphyseal histovariability. Still, Jeholornis, the only avialan studied here, is histologically distinct from all other specimens in the multivariate visualizations raising the hypothesis that its bone tissue characteristics may be related to its superior aerial capabilities compared to the non-avialan paravians. Our results warrant further research on the osteohistological correlates of flight and developmental strategies in birds and bird-like dinosaurs.
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  • Citations (1)
References111
Newest
#1Ulysse Lefèvre (University of Liège)H-Index: 5
#2Andrea Cau (UNIBO: University of Bologna)H-Index: 14
Last.Pascal Godefroit (Royal Belgian Institute of Natural Sciences)H-Index: 20
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#1Corwin Sullivan (CAS: Chinese Academy of Sciences)H-Index: 22
#2Xing Xu (CAS: Chinese Academy of Sciences)H-Index: 41
Last.Jingmai K. O’Connor (CAS: Chinese Academy of Sciences)H-Index: 9
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#1Rui Pei (AMNH: American Museum of Natural History)H-Index: 3
#2Quanguo Li (China University of Geosciences)H-Index: 2
Last.Ke-Qin Gao (PKU: Peking University)H-Index: 20
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#1João Paulo Machado (University of Porto)H-Index: 7
#2Warren E. Johnson (SCBI: Smithsonian Conservation Biology Institute)H-Index: 44
Last.Agostinho Antunes (University of Porto)H-Index: 30
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#1Xia Wang (University of Texas at Austin)H-Index: 9
#2Julia A. Clarke (University of Texas at Austin)H-Index: 27
#1Johan LindgrenH-Index: 20
#2Peter Sjövall (SP Technical Research Institute of Sweden)H-Index: 27
Last.Jimmy HeimdalH-Index: 13
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Cited By1
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#1Alida M. Bailleul (CAS: Chinese Academy of Sciences)H-Index: 6
#2Jingmai K. O'Connor (CAS: Chinese Academy of Sciences)H-Index: 22
Last.Mary H. SchweitzerH-Index: 24
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