Type species: Stomachetosella crassicollis Canu & Bassler, 1917
This genus includes the species:
| Osburn, 1952 | Recent | California | WoRMS 470596 | |
| (O'Donoghue & de Watteville, 1944) | Recent | S. Africa, S. Atlantic | WoRMS 470598 | |
| (Kluge, 1946) | Recent | Arctic | WoRMS 423777 | |
| Soule, Soule & Chaney, 1995 | Recent | SW USA | WoRMS 470600 | |
| Canu & Bassler, 1917 | Tertiary (Olig.) | USA Alabama | WoRMS 1408806 | |
| Grischenko, Dick & Mawatari, 2007 | Recent | Japan Hokkaido | WoRMS 470601 | |
| Osburn, 1952 | Recent | Alaska | WoRMS 470597 | |
| David, 1949 | Neogene Miocene Burdigalian | France | WoRMS 1408807 | |
| (Nordgaard, 1906) | Recent | Arctic and boreal Atlantic | WoRMS 156441 | |
| Hayward, 1994 | Recent | Faroe Is. | WoRMS 111576 | |
| (Canu & Bassler, 1929) | Recent | Sea of Japan | WoRMS 1043058 | |
| Dick & Ross, 1988 | Recent | Alaska | WoRMS 470599 | |
| Hayami, 1975 | Neogene Pliocene | Japan | WoRMS 1408808 |
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| Stomachetosella crassicollis (thanks to Dennis Gordon, NIWA) |
Stomachetosella decorata (thanks to Matt Dick) |
Harmer notebook - entry for Stomachetosella
Stomachetosella collaris at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Stomachetosella producta at Atlas of Arctic Bryozoa - Piotr Kuklinski.
Stomachetosella perforata at Pleistocene Bryozoa of Kuromatsunai, Japan.