Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsumoto Tatsuro and Nishida Tamio,Biostratigraphy of the late Albian-early Cenomanian succession : the case in the Shuparo Valley of Hokkaido,Fossils,00229202,Palaeontological Society of Japan,2000,68,0,1-12,https://cir.nii.ac.jp/crid/1390282679410922240,https://doi.org/10.14825/kaseki.68.0_1