Hiroyuki TANAKA and Hiromu KOBAYASI

Diatom, 12:1-6.
[J-STAGE]

A new species of Cyclotella, C. kohsakaensis sp. nov., from a Pliocene deposit, Central Japan.

Seiichi KOMURA

Diatom, 12:7-26.
[J-STAGE]

An attachment mode of opposite valves in some diatom frustules.

Noriko ISHIDA and Hiromu KOBAYASI

Diatom, 12: 27-34.
[J-STAGE]

Three diatom species newly found in Japan and their occurrence in the Inbe-gawa (Inbe River), and Tama-gawa (Tama River), Central Japan. (in Japanese)

Hiroyuki TANAKA and Hiromu KOBAYASHI

Diatom, 12:35-42.
[J-STAGE]

The fine structure of Cyclotella rhomboideo-elliptica Skuja, from a Middle Pleistocene deposit, Gunma Prefecture, Central Japan.

Seiichi KOMURA

Diatom, 12:43-68.
[J-STAGE]

Some new diatoms from the Miocene Nabuto formation, Central Japan.

Yuichi MORI

Diatom, 12:69-72.
[J-STAGE]

[note] Diatom thanatocoenoses obtained from the deposits of the gutters and moats encircling the Asahi and the Nishishiga Yayoi settlements of Aichi Prefecture (in Japanese)