Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yasunari Shigeta and Yukiyasu Tsutsumi and Akihiko Misaki,"U-Pb age of the Didymoceras awajiense Zone (upper Campanian, Cretaceous) in the Aridagawa area, Wakayama, southwestern Japan","Bulletin of the National Museum of Nature and Science. Series C, Geology & paleontology = 国立科学博物館研究報告. C類, 地質学・古生物学",18819079,東京 : 国立科学博物館,2017-12,43,,11-18,https://cir.nii.ac.jp/crid/1520009408545021056,