Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Hiromichi Hirano and Kanemitsu Takizawa and Satoshi Tsuchida,"Biostratigraphy of the Upper Cretaceous in the Oyubari area,central Hokkaido,Japan-2-",早稲田大学理工学研究所報告,03727181,東京 : 早稲田大学理工学研究所,1989,,125,p14-36,https://cir.nii.ac.jp/crid/1520290882195996928,