| author | date | title | journal / publication | Sopott-Ehlers B | 1997 | Ultrastructure observations on the "eye spot" of Halammovortex nigrifrons (Plathelminthes, Rhabdocoela, "Dalyelloida"). | Microfauna Marina 11: 59-69 |
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| Halammovortex nigrifrons (Karling, 1935) | [with synonyms] | w | other research on this sp. |