| 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 15 Number 1 | March 1989 | 
           
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                |  | Tatsuaki KIMURA, Tamiko OHANAI: | P.1 | 
              
                |  | Late Jurassic Plants from the Oginohama Formation, Oshika Group in the Outer Zone of Northeast Japan (I) |  | 
              
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                |  | lkuwo 0BATA, Yoshitaro KAWASHITA, Seijuro MALYA, Yojiro TAKETANI, Masao FUTAKAMI, Tadashi SUZUKI: | P.25 | 
              
                |  | An Upper Cretaceous Plesiosaur (Family Elasmosauridae) from the Wakkanai area, Hokkaido |  | 
              
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                |  | Keiichi ONO: | P.33 | 
              
                |  | A Bony-Toothed Bird from the Middle Miocene, Chichibu Basin, Japan |  |