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) YASUNARI SHIGETA and MASATAKA IZUKURA and TOMOHIRO NISHIMURA and YUKIYASU TSUTSUMI,"Middle and late Campanian (Late Cretaceous) ammonoids from the Urakawa area, Hokkaido, northern Japan",Paleontological Research,13428144,Tokyo : Palaeontological Society of Japan,2016-10,20,4,322-366,https://cir.nii.ac.jp/crid/1523106605645064448,https://doi.org/10.2517/2016pr004