検索結果（標本）

Grammoceras ? Okadai Yokoyama   Holotype

Yokoyama, M., 1904b   p. 14, pl. 4, fig. 3

Mesozoic | Mollusca : Cephalopoda

Material Reports, no. 2, p. 301.

Grammoceras chibai Yokoyama   Holotype

Shikama, T., 1943   p. 184, pl. 20, fig. 9

Mesozoic | Mollusca : Cephalopoda

Material Reports, no. 15, p. 142.

Grammoceras chibai Yokoyama   Holotype

Shikama, T., 1952   p. 116, pl. 20, fig. 9

Mesozoic | Mollusca : Cephalopoda

Material Reports, no. 15, p. 152.

Grammoceras sp.

Sato, T., 1962   p. 65, pl. 3, fig. 11

Mesozoic | Mollusca : Cephalopoda

Material Reports, no. 2, p. 252.

Grammoceras sp.

Sato, T., 1974a   pl. J-5, fig. 1a,b

Mesozoic | Mollusca : Cephalopoda

Material Reports, no. 15, p. 136.