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) Yuri D. Zakharov,Orthocerid and ammonoid shell structure:its bearing on cephalopod classification,"Bulletin of the National Science Museum. Series C, Geology & Paleontology",0385244X,Tokyo : National Science Museum,1996-06,22,1・2,11-35,https://cir.nii.ac.jp/crid/1523669554923032448,