2009 Fiscal Year Final Research Report
The morphological analysis of brain and nervous systems of dinosaurs and the evolutionary process of the transition from non-avian dinosaurs to birds.
| Project/Area Number |
18340162
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | Hokkaido University |
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Principal Investigator |
KOBAYASHI Yoshitsugu Hokkaido University, 総合博物館, 准教授 (70400033)
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| Co-Investigator(Kenkyū-buntansha) |
KANEKO Katsuhiko 北海道大学, 大学院・工学研究科, 教授 (20128268)
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| Project Period (FY) |
2006 – 2009
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| Keywords | 化石 / 系統 / 進化 / 機能形態 |
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| Research Abstract |
This study provides informative data to elucidate the evolutionary processes of body and brain from non-avian dinosaurs to birds and the transition of these animals. Specifically, a part of this study focused on large scaled morphology, such as the olfactory bulb for smelling, which reveals the changes of life style and feeding behaviors. This perspective is important to understand the paleoecology and food chain during the Mesozoic and the competition of niches among these animals. Oviraptorosaurs is one of good examples for the transitional dinosaurs between non-avian dinosaurs and birds. In this study, we analyze the changes in body and brain morphology to discuss if oviraptorosaurs belong to birds or avian features in this group is convergent. We concludes that the latter because brain features are more like non-avian dinosaurs, showing complex history of thetransition between non-avian dinosaurs to birds. In the future study, we need to much smaller scale in terms of the structures of brain and nervous system, which will providemore information about the evolution of dinosaurs.
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Research Products
(20 results)
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[Journal Article] Dinosaurs from Japan : pp. 87-102 In J. Lu, Y. Kobayashi, D. Huang, and Y. Lee (eds.)2006
Author(s)
Kobayashi, Y., Manabe, M., Ikegami, N., Tomida, Y., Hayakawa, H.
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Journal Title
Papers from the 2005 Heyuan International Dinosaur Symposium. Beijing, Geological Publishing House
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[Presentation] 演題「A new basal ornithomimid (Dinosauria : Theropoda) from the Late Cretaceous in Henan Province of China」2008
Author(s)
Kobayashi, Y., Lu, J., Lee, Y., Xu, L., Zhang, X.
Organizer
68th Annual Meeting of Society of Vertebrate Paleontology
Place of Presentation
Ohio, USA
Year and Date
20081015-20081018
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[Presentation] 演題「Endocranial anatomy of a primitive oviraptorosaur, Incisivosaurus gauthieri, (Theropoda : Dinosauria)」2007
Author(s)
Balanoff, A., Xu, X., Matsufune, Y., Kobayashi, Y., Norell, M.
Organizer
67th Annual Meeting of Society of Vertebrate Paleontology
Place of Presentation
Texas, USA
Year and Date
20071017-20071020
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