Wataru Ishijima was a paleontologist and geologist. Ishijima was one of the most prolific researchers of fossil calcareous algae. After graduating from the Imperial Fisheries Institute in 1927, Ishijima joined the Institute of Geology and Paleontology, Faculty of Science, Tohoku Imperial University (Sendai) from 1927–1931. He then worked at the Institute of Geology, Taihoku Imperial University (Taipei) during 1942–1945 and then at the Rikkyo University (Tokyo) from 1945–1980. His doctoral dissertation was submitted to Tohoku University and was privately published by Yūhodō. He described a total of 139 taxa of fossil calcareous algae including at least 114 species of Corallinales, and he produced more than 45 publications on coralline algal taxonomy.
Asperdaphne bela is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Asperdaphne desalesii is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Asperdaphne esperanza is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Asperdaphne legrandi is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
Gemmula rarimaculata is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.
Pristiterebra is a genus of sea snails, marine gastropod mollusks in the family Terebridae, the auger snails.
Asperdaphne is a genus of sea snails, marine gastropod mollusks in the family Raphitomidae.
Lirularia pygmaea is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Minolia pseudobscura is a fossil species of sea snail, a marine gastropod mollusk in the family Solariellidae.
Minolia sakya is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.
Minolia subangulata, common name the subangular margarite, is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.
Kelletia lischkei is a species of large sea snail, or whelk, a marine gastropod mollusc in the family Buccinidae, the true whelks.
Paradrillia dainichiensis is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.
Paradrillia nivalioides is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.
Guraleus tokunagae is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Oenopota kagana is an extinct species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Comitas yokoyamai is an extinct species of sea snail, a marine gastropod mollusc in the family Pseudomelatomidae.
Inquisitor cosibensis is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.
Inquisitor pseudoprincipalis is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.
