Scientific Publications
| Bulletin of the National Science Museum Series C (Geology & Paleontology) | date of publication | |
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| Bulletin of the National Science Museum Series C (Geology & Paleontology) Volume 1 Number 1 | March 1975 | |
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| Ikuwo Obata: | P.1 | |
| Lower Cretaceous Ammonites from the Miyako Group Part 5. Diadochoceras from the Miyako Group |  |
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| Teruya Uyeno, Shoji Fujiii: | P.11 | |
| A Fish Fossil of the Family Scombridae from a Miocene Bed in Toyama Prefecture, Japan | |
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| Ikuo Obata, Shigeo Hagiwara, Shigeo Kamiko: | P.17 | |
| Geological Age of the Cretaceous Choshi Group | |
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