Traits taxon details
original description
(of Viviparus uryuensis Yokoyama, 1932 †) Yokoyama M. (1932). Tertiary Mollusca from the Coalfield of Uryu, Ishikari. <em>Journal of the Faculty of Science, Imperial University of Tokyo. Section II, Geology, Mineralogy, Geography, Seismology.</em> 3(6): 221-247., available online at http://umdb.um.u-tokyo.ac.jp/DKoseibu/pdf/Ref_0503_.pdf page(s): 236-237, pl. 1, figs 8-10 [details] Available for editors 
basis of record
Matsuoka, K. (1985). Pliocene freshwater gastropods from the Iga Formation of the Kobiwako Group, Mie Prefecture, Central Japan. <em>Transactions and Proceedings of the Palaeontological Society of Japan, new series.</em> 139: 180-195., available online at http://www.palaeo-soc-japan.jp/download/TPPSJ/TPPSJ_NS139.pdf page(s): 186; note: classification ten [details] Available for editors 
|