検索結果（標本）

Yokoyamaia (Yokoyamaia) ornatissima (Yokoyama, 1927)   Holotype

Oyama, K., 1973   p. 72, pl. 20, fig. 4a, b

Cenozoic | Mollusca : Gastropoda : Philinidae

Material Reports, no. 9, p. 148.