MolluscaBase name details
original description
Makiyama J. (1924). The Evolution of Umbonium. <em>Japanese Journal of Geology and Geography.</em> 3: 119–130.
page(s): 120, 128 [details]
basis of record
Higo, S., Callomon, P. & Goto, Y. (1999) Catalogue and Bibliography of the Marine Shell-Bearing Mollusca of Japan. Elle Scientific Publications, Yao, Japan, 749 pp.
page(s): 66. [details]