Verification of 'Light Switch Theory' based on fossil evidences
| Project/Area Number |
24540501
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Stratigraphy/Paleontology
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| Research Institution | Kumamoto University (2014)
Japan Agency for Marine-Earth Science and Technology (2013)
Gunma Museum of Natural History (2012) |
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Principal Investigator |
TANAKA Gengo 熊本大学, 沿岸域環境科学教育研究センター, 特別研究員 (50437191)
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| Co-Investigator(Kenkyū-buntansha) |
MAEDA Haruyoshi 九州大学, 総合研究博物館, 教授 (10181588)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | カンブリア紀 / 眼の化石 / 光スイッチ説 / 例外的に保存の良い化石 / 節足動物 / 脊椎動物 / 軟体部保存 / 機能形態 / 光スイッチ / 国際情報交換 / 中国 / アメリカ / イギリス / 中枢神経系 / 例外的に保存のよい化石 / CTスキャン |
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| Outline of Final Research Achievements |
Cambrian Macroevolution was caused by intensification of evolution of eye of animals and their survival competition (Light Switch Theory = LST). Here, I was verified from fossil evidence about the LST. As a result, I found a homologous central nervous system with extant chelicerates from an apparently strange arthropoda having a pair of dumbbell-shaped compound eye in the head. Cambrian arthropods, as well as of the extant arthropods, has an eye with high resolution, it also suggested that a complex behavior was achieved by the central nervous system. This research supports the LST.
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Report
(4 results)
Research Products
(21 results)
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[Journal Article] Lower Triassic mixed carbonate and siliciclastic setting with Smithian–Spathian anoxic to dysoxic facies, An Chau basin, northeastern Vietnam2014
Author(s)
Toshifumi Komatsu, Hajime Naruse, Yasunari Shigeta, Reishi Takashima, Takumi Maekawa, Huyen Dang, Tien Dinh, Phong Nguyen, Hung Nguyen, Gengo Tanaka and Masatoshi Sone
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Journal Title
Sedimentery Geology
Volume: 300
Pages: 28-48
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Mineralized rods and cones suggest colour vision in a 300 Myr-old fossil fish2014
Author(s)
Gengo Tanaka, Andrew Parker, Yoshikazu Hasegawa, David Siveter, Ryoichi Yamamoto, Kiyoshi Miyashita, Yuichi Takahashi, Shosuke Ito, Kazumasa Wakamatsu, Takao Mukuda, Marie Matsuura, Ko Tomikawa, Masumi Furutani, Kayo Suzuki and Haruyoshi Maeda
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Journal Title
Nature Communications
Volume: 5
Pages: 5920-5920
NAID
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Crittendenia (Bivalvia) from the Lower Triassic Olenekian Bac Thuy Formation, An Chau Basin, Northern Vietnam2013
Author(s)
Komatsu, T., Shigeta, Y., Dang, T. H., Dinh C. T., Maekawa, T., Tanaka, G.
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Journal Title
Paleontological Research
Volume: 17
Issue: 1
Pages: 1-11
DOI
NAID
Related Report
Peer Reviewed
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