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Kobayashi Yoshitsugu

Hokkaido University MuseumProfessor

Researcher basic information

■ Degree
  • Ph.D., Southern Methodist University
■ URL
researchmap URLホームページURL■ Various IDs
J-Global ID■ Research Keywords and Fields
Research Keyword
  • 国際情報交換
  • 系統
  • 化石
  • 進化
  • 形態機能
  • 機能形態
Research Field
  • Natural Science, Biogeosciences
■ Educational Organization

Career

■ Career
Career
  • 2019 - Present
    Osaka University, The Museum of Osaka University, 招聘教授
  • 2019 - Present
    Hokkaido University, The Hokkaido University Museum, 教授
  • 2013 - 2019
    Osaka University, The Museum of Osaka University, 招聘准教授
  • 2009 - 2019
    Hokkaido University, The Hokkaido University Museum, 准教授
  • 2008 - 2009
    Hokkaido University, The Hokkaido University Museum, 助教
  • 2005 - 2008
    Hokkaido University, The Hokkaido University Museum, 助手

Research activity information

■ Awards
  • Oct. 2018, 北海道, 北海道文化奨励賞
    小林快次
  • Nov. 2017, 北海道新聞文化賞 学術部門
    小林快次
  • Jun. 2015, 日本古生物学会, 学術賞
    小林快次
■ Papers
■ Other Activities and Achievements
■ Books and other publications
■ Syllabus
  • 大学院共通授業科目（一般科目）：複合領域, 2024年, 修士課程, 大学院共通科目
  • 大学院共通授業科目（一般科目）：自然科学・応用科学, 2024年, 修士課程, 大学院共通科目
  • 大学院共通授業科目（教育プログラム）：博物館学, 2024年, 修士課程, 大学院共通科目
  • 環境と人間, 2024年, 学士課程, 全学教育
  • 古生物学, 2024年, 学士課程, 理学部
  • 環境と人間, 2024年, 学士課程, 全学教育
  • 博物館展示論, 2024年, 学士課程, 文学部
  • 歴史・文化モジュール特殊科目B, 2024年, 学士課程, 現代日本学プログラム課程
  • 現代地球惑星科学概論１, 2024年, 学士課程, 理学部
■ Research Themes
  • Study on the unique convergent evolution mechanism in ornithomimosaur dinosaurs
    Grants-in-Aid for Scientific Research
    2015 - 2017
    Kobayashi Yoshitsugu
    The degree of pneumatization of the Deinocheirus was beyond sauropods, which is the largest terrestrial animals in the life history. Since this pneumatization is present in a basal form of this group, it was established at the early stage, and this dinosaur group became gigantic by progress of pneumatization along with evolution. Also, the skull has features characterized as a wide beak, a deep lower jaw, and a long snout. They had a structure that made it possible to divide foraging and food. Furthermore, it is thought that gastroliths in the body had a high degree of circularity and had high physical digestive activity in the stomach. Long neural spines have a much more complicated morphology than other dinosaurs. It was considered that long nural spines had multiple functions and evolved by changing the weight of the function as necessary.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, Principal investigator, Competitive research funding, 15K05324
  • Diet evolution of theropods dinosaurs and its implication to the origin of birds
    Grants-in-Aid for Scientific Research
    2012 - 2014
    KOBAYASHI Yoshitsugu
    This study focuses on the diet evolution of theropods dinosaurs and its implication to the origin of birds. The evolution of herbivory in theropod dinosaurs is a key to understand the shift from non-avian to avian dinosaurs. My study suggests that the diversity of herbivory in theropods is greater than previously thought, and the extremities are therizinosaurs and ornithomimosaurs. Therizinosaurs developed more efficient oral and gastrointestinal digestion, whereas ornithomimosaurs had gastroliths and muscular stomach to become herbivory. This diversity in digestion may have had led to the diversity in species and ecology, which may a driving force to the bird origin.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Hokkaido University, Principal investigator, Competitive research funding, 24540494
  • The morphological analysis of brain and nervous systems of dinosaurs and the evolutionary process of the transition from non-avian dinosaurs to birds.
    Grants-in-Aid for Scientific Research(基盤研究(B))
    2006 - 2009
    Yoshitsugu KOBAYASHI; Katsuhiko KANEKO
    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.
    Ministry of Education, Culture, Sports, Science and Technology, 基盤研究(B), 北海道大学, Principal investigator, Competitive research funding, 18340162