Impagidinium japonicum

japonicum Matsuoka, 1983b, p.120–121, pl.6, figs.2a–c,3a–b,4–5; text-figs.13A–B.  Holotype: Matsuoka, 1983b, pl.6, figs.2a–c; Jan du Chêne et al., 1986a, pl.59, figs.1–3.  Taxonomic junior synonym: Impagidinium pacificum, according to Bujak and Matsuoka (1986, p.236).  Age: Pliocene or younger.

Parent: Impagidinium