High-resolution micro-CT analysis of the oldest animal embryo and larva fossils: Implications for the early evolution of Metazoa
Project/Area Number |
25610148
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Geology
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Research Institution | The University of Tokyo |
Principal Investigator |
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
|
Keywords | 放射光X線Micro-CT / カンブリア紀 / カンブリア爆発 / 後生動物化石 / 微小硬骨格動物化石 / 化学古生物学 / エディアカラ紀 / 動物胚 / 三次元構造解析 / 初期後生動物進化 / SPring-8 / 三次元内部構造解析 |
Outline of Final Research Achievements |
It is difficult to investigate the origins of fossils whose structures are very simple or have no modern equivalents based on their morphology. We try to establish chemopaleontology and micro-CT analyses of small globular fossils to identify the oldest, Ediacaran and early Cambrian, egg and embryo fossils, and investigate evolution of tissues. We obtained trace element mapping of extant cnidarian eggs and embryos to find unique signatures of the distribution and abundances of the trace elements over the eggs and embryos, and compare them with the Ediacaran globular microfossils and identify their phylum. We conducted synchrotron and conventional X-ray Micro-CT analyses of the oldest cnidarian polyp fossils to observe the internal structures. We found clear some original tissue structures in the three dimensional images.
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Report
(4 results)
Research Products
(25 results)
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[Journal Article] Divergent evolution of medusozoan symmetric patterns: Evidence from the microanatomy of Cambrian tetramerous cubozoans from South China2016
Author(s)
Han, J., Kubota, S., Li, G., Ou, Q., Wang, X., Yao, X., Li, Y., Uesugi, K., Hoshino, M., Sasaki, O., Kano, H., Sato, T. & Komiya, T.
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Journal Title
Gondwana Research
Volume: 31
Pages: 150-163
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Internal microanatomy and zoological affinity of the early Cambrian Olivooides2016
Author(s)
Han, J., Li, G., Kubota, Shin, Ou, Q., Toshino, S., Wang, X., Yang, X., Uesugi, K., Hoshino, M., Sasaki, O., Kano, H., Sato, T. & Komiya, T.
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Journal Title
Acta Geological Sinica (English edition)
Volume: 90
Pages: 801-840
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] A high-resolution chemostratigraphy of post-Marinoan Cap Carbonate using drill core samples in the Three Gorges area, South China2016
Author(s)
Sato, H., Tahata, M., Sawaki, Y., Maruyama, S., Yoshida, N., Shu, D., Han, J., Li, Y. & Komiya, T.
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Journal Title
Geoscience Frontiers
Volume: -
Related Report
Peer Reviewed
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[Journal Article] Uranium and molybdenum isotope evidence for an episode of widespread ocean oxygenation during the late Ediacaran Period2015
Author(s)
Kendall, B., Komiya, T., Lyons, T.W., Bates, S.M., Gordon, G.W., Romaniello, S.J., Jiang, G., Creaser, R.A., Xiao, S., McFadden, K., Sawaki, Y., Tahata, M., Shu, D., Han, J., Li, Y., Chu, X. & Anbar, A.D.
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Journal Title
Geochimica et Cosmochimica Acta
Volume: 156
Pages: 173-193
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] The marine environments encompassing the Neoproterozoic glaciations: Evidence from C, Sr and Fe isotope ratios in the Hecla Hoek Supergroup in Svalbard2015
Author(s)
Tahata, M., Sawaki, Y., Ueno, Y., Nishizawa, M., Yoshida, N., Ebisuzaki, T., Komiya, T. & Maruyama, S.
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Journal Title
Precambrian Research
Volume: 263
Pages: 190-208
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Three-step modernization of the ocean: Modeling of carbon cycles and the revolution of ecological systems in the Ediacaran/Cambrian periods2015
Author(s)
Tahata, M., Sawaki, Y., Ueno, Y., Nishizawa, M., Yoshida, N., Ebisuzaki, T., Komiya, T. & Maruyama, S.
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Journal Title
Geoscience Frontiers
Volume: 6
Pages: 12-136
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Divergent evolution of medusozoan symmetric patterns: Evidence from the microanatomy of Cambrian tetramerous cubozoans from South China2015
Author(s)
Han, Jian Kubota, Shin Li, Guoxiang Ou, Qiang Wang, Xing Yao, Xiaoyong Li, Yong Uesugi, Kentaro Hoshino, Masato Sasaki, Osamu Kano, Harumasa Sato, Tomohiko Komiya, Tsuyoshi
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Journal Title
Gondwana Research
Volume: -
NAID
Related Report
Peer Reviewed
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[Journal Article] Duan, Y., Han, J., Fu, D., Zhang, X., Yang, X., Komiya, T., Shu, D., 2014. Reproductive strategy of the bradoriid arthropod Kunmingella douvillei from the Lower Cambrian Chengjiang Lagerstätte, South China2014
Author(s)
Duan, Y., Han, J., Fu, D., Zhang, X., Yang, X., Komiya, T., Shu, D.
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Journal Title
Gondwana Research
Volume: 25
Pages: 983-990
Related Report
Peer Reviewed
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[Journal Article] FTIR microspectroscopy of Ediacaran phosphatized microfossils from the Doushantuo Formation, Weng'an, South China2014
Author(s)
Igisu, M., Komiya, T., Kawashima, M., Nakashima, S., Ueno, Y., Han, J., Shu, D., Li, Y., Guo, J., Maruyama, S., Takai, K.
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Journal Title
Gondwana Research
Volume: 25
Pages: 1120-1138
Related Report
Peer Reviewed
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[Journal Article] Early Cambrian Pentamerous Cubozoan Embryos from South China2013
Author(s)
Han, J., Kubota, S., Li, G., Yao, X., Yang, X., Shu, D., Li, Y., Kinoshita, S., Sasaki, O., Komiya, T., Yang, G.
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Journal Title
NAID
Related Report
Peer Reviewed
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[Presentation] Nitrogen isotope chemostratigraphy of the Early Cambrian platform sequence at Three Gorges, South China2014
Author(s)
Tsuchiya, Y., Tahata, M., Nishizawa, M., Sawaki, Y., Sato, T. and Komiya, T.
Organizer
日本地球惑星科学連合2014年大会
Place of Presentation
日本国神奈川県横浜市パシフィコヨコハマ
Year and Date
2014-04-30
Related Report
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[Book] Integrated evolution of cnidarians and oceanic geochemistry before and during the Cambrian explosion, In: Goffredo, S. & Dubinsky, Z. (Eds.), The Cnidaria, past, present and future: The world of Medusa and her sisters2016
Author(s)
Han, J., Zhang, X. & Komiya, T.
Publisher
Springer
Related Report
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