Procerodes ulvae (Ørsted, 1843) | 1932 or earlier | | | Jekaterinhafen. |
Uteriporus vulgaris Bergendal, 1890 | 1932 or earlier | | | under rocks, Jekaterinhafen. |
Notentera ivanovi Joffe, Selivanova & Kornakova, 1997 | prior to 1997 | | | from the digestive tract of a polychaete Nephthis ciliata from the White Sea. |
Baicalellia pusilla (Luther, 1962) | 1988 or earlier | | | |
Alauretta viridirostrum Mereschkowsky, 1878 | 1878 or earlier | | | |
Prostomum boreale Mereschkowsky, 1878 | 1878 or earlier | | | |
Prostomum papillatum Mereschkowsky, 1878 | 1878 or earlier | | | |
Mesostomum graffi Mereschkowsky, 1878 | 1878 or earlier | | | |