著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) LARISA A. DOGUZHAEVA,The original composition of the pro‐ostracum of an early Sinemurian belemnite from Belgium deduced from mode of fossilization and ultrastructure,Palaeontology,0031-0239,Wiley,2012-02-20,55,2,249-260,https://cir.nii.ac.jp/crid/1361137043820164736,https://doi.org/10.1111/j.1475-4983.2012.01136.x