Type species: Diplonotos striatus Canu & Bassler, 1930
| Synonyms | Author | Type species |
|---|---|---|
| Striatodoma | Winston & Beaulieu, 1999 | Striatodoma dorothea Winston & Beaulieu, 1999 (Fide D.P. Gordon) |
This genus includes the species:
| Smithsonius bifax | (Cheetham, 1972) | Eocene | Tonga |
| Smithsonius dorothea | (Winston & Beaulieu, 1999) | Recent | NE Pacific (deep-water) |
| Smithsonius striatus | (Canu & Bassler, 1930) | Recent | Galapagos |
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| Smithsonius striatus (Thanks to Dennis Gordon and NIWA.) |