MolluscaBase name details
original description
Yokoyama, M. (1922). Fossils from the Upper Musashino of Kazusa and Shimosa. <em>Journal of the College of Science, Imperial University of Tokyo.</em> 44(1): viii + 1-200, pls. 1-17 [7 July 1922]., available online at http://umdb.um.u-tokyo.ac.jp/DKoseibu/pdf/Ref_0465_.pdf
page(s): 79; plate IV, fig. 3 [details]
basis of record
Oyama, K. (1973). Revision of Matajiro Yokoyama's type Mollusca from the Tertiary and Quarternary of the Kanto area. <em>Palaeontological Society of Japan Special Papers.</em> 17: 1-148 + 57 pls.
page(s): 20; plate 4, fig. 21 [details] Available for editors [request]