完整後設資料紀錄
DC 欄位語言
dc.contributor.authorLi, Zhihengen_US
dc.contributor.authorWang, Chun-Chiehen_US
dc.contributor.authorWang, Minen_US
dc.contributor.authorChiang, Cheng-Chengen_US
dc.contributor.authorWang, Yanen_US
dc.contributor.authorZheng, Xiaotingen_US
dc.contributor.authorHuang, E-Wenen_US
dc.contributor.authorHsiao, Kikoen_US
dc.contributor.authorZhou, Zhongheen_US
dc.date.accessioned2020-07-01T05:21:13Z-
dc.date.available2020-07-01T05:21:13Z-
dc.date.issued2020-04-21en_US
dc.identifier.issn1471-2148en_US
dc.identifier.urihttp://dx.doi.org/10.1186/s12862-020-01611-wen_US
dc.identifier.urihttp://hdl.handle.net/11536/154302-
dc.description.abstractBackground Tooth morphology within theropod dinosaurs has been extensively investigated and shows high disparity throughout the Cretaceous. Changes or diversification in feeding ecology, i.e., adoption of an herbivorous diet (e.g., granivorous), is proposed as a major driver of tooth evolution in Paraves (e.g., Microraptor, troodontids and avialans). Here, we studied the microscopic features of paravian non-avian theropod and avialan teeth using high-spatial-resolution synchrotron transmission X-ray microscopy and scanning electron microscopy. Results We show that avialan teeth are characterized by the presence of simple enamel structures and a lack of porous mantle dentin between the enamel and orthodentin. Reduced internal structures of teeth took place independently in Early Cretaceous birds and a Microraptor specimen, implying that shifts in diet in avialans from that of closely related dinosaurs may correlate with a shift in feeding ecology during the transition from non-avian dinosaurs to birds. Conclusion Different lines of evidence all suggest a large reduction in biting force affecting the evolution of teeth in the dinosaur-bird transition. Changes in teeth microstructure and associated dietary shift may have contributed to the early evolutionary success of stemward birds in the shadow of other non-avian theropods.en_US
dc.language.isoen_USen_US
dc.subjectToothen_US
dc.subjectAvialanen_US
dc.subjectFeeding ecologyen_US
dc.subjectNon-avian dinosaursen_US
dc.titleUltramicrostructural reductions in teeth: implications for dietary transition from non-avian dinosaurs to birdsen_US
dc.typeArticleen_US
dc.identifier.doi10.1186/s12862-020-01611-wen_US
dc.identifier.journalBMC EVOLUTIONARY BIOLOGYen_US
dc.citation.volume20en_US
dc.citation.issue1en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.identifier.wosnumberWOS:000529920000002en_US
dc.citation.woscount0en_US
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