Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tazawa Jun-ichi and Miyake Yukio and Niikawa Isao,"Purdonella (Spiriferida, Brachiopoda) from the Carboniferous Ichinotani Formation, Fukuji, Hida Gaien Belt, central Japan, and its palaeobiogeographical significance",The Journal of the Geological Society of Japan,00167630,The Geological Society of Japan,2010,116,3,127-133,https://cir.nii.ac.jp/crid/1390282681214509056,https://doi.org/10.5575/geosoc.116.127