First issued in release COL21.4.
Last used in release COL23.9
Published in
Fujita, Y., & Ito, S. (1957). A Study of the Foraminiferal Assemblages from the Miocene Formation, Date District, Fukushima Prefecture, Japan. The Journal of the Geological Society of Japan, 63(744): 497–513. https://doi.org/10.5575/geosoc.63.497