Ultramicrostructural reductions in teeth: implications for dietary transition from non-avian dinosaurs to birds
文献类型：期刊论文
| 作者 | Li,Zhiheng1,7; Wang,Chun-Chieh6; Wang,Min1,7; Chiang,Cheng-Cheng6; Wang,Yan5; Zheng,Xiaoting4; Huang,E-Wen3; Hsiao,Kiko2; Zhou,Zhonghe1,7
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| 刊名 | BMC Evolutionary Biology
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| 出版日期 | 2020-04-21 |
| 卷号 | 20期号:1页码:8 |
| 关键词 | Tooth Avialan Feeding ecology Non-avian dinosaurs |
| DOI | 10.1186/s12862-020-01611-w |
| 英文摘要 | AbstractBackgroundTooth 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.ResultsWe 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.ConclusionDifferent 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. |
| 语种 | 英语 |
| WOS记录号 | BMC:10.1186/S12862-020-01611-W |
| 出版者 | BioMed Central |
| 源URL | [http://119.78.100.205/handle/311034/16648]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | Li,Zhiheng; Wang,Chun-Chieh |
| 作者单位 | 1.CAS Center for Excellence in Life and Paleoenvironment 2.Mr. Fossil Institute 3.National Chiao Tung University; Department of Materials Science and Engineering 4.Tianyu Natural History Museum of Shandong 5.Linyi University; Institute of Geology and Paleontology 6.National Synchrotron Radiation Research Center 7.Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences; Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences |
| 推荐引用方式 GB/T 7714 | Li,Zhiheng,Wang,Chun-Chieh,Wang,Min,et al. Ultramicrostructural reductions in teeth: implications for dietary transition from non-avian dinosaurs to birds[J]. BMC Evolutionary Biology,2020,20(1):8. |
| APA | Li,Zhiheng.,Wang,Chun-Chieh.,Wang,Min.,Chiang,Cheng-Cheng.,Wang,Yan.,...&Zhou,Zhonghe.(2020).Ultramicrostructural reductions in teeth: implications for dietary transition from non-avian dinosaurs to birds.BMC Evolutionary Biology,20(1),8. |
| MLA | Li,Zhiheng,et al."Ultramicrostructural reductions in teeth: implications for dietary transition from non-avian dinosaurs to birds".BMC Evolutionary Biology 20.1(2020):8. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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