| Acmostomum groenlandicum Levinsen, 1879 | | w | latest taxonomic authority | |
| Plagiostomum caudatum Levinsen, 1879 | [with synonyms] | w | other taxonomic work | 140-141, fig. 14 |
| Plagiostomum groenlandicum (Levinsen, 1879) | | w | latest taxonomic authority | 143-144, fig. 17 |
| Plagiostomidae Brachyposthia Brandtner, 1934 | | w | primary taxonomic authority (describer) | |
| Brachyposthia cuticulata (1) Brandtner, 1934 | | w | primary taxonomic authority (describer) | 146, fig. 21 |
| Brachyposthia cuticulata (2) (Brandtner, 1934) | | - | primary taxonomic authority (describer) | |
| Plagiostomum anocelis Brandtner, 1934 | | w | primary taxonomic authority (describer) | 138, fig. 11 |
| Plagiostomum arcticum Brandtner, 1934 | | w | primary taxonomic authority (describer) | 144-145, fig. 18 |
| Plagiostomum chinoecetis Brandtner, 1934 | [with synonyms] | w | primary taxonomic authority (describer) | 143, fig. 16 |
| Plagiostomum cuticulata (Brandtner, 1934) | | w | primary taxonomic authority (describer) | |
| Plagiostomum cuticulata cuticulata (Brandtner, 1934) | [with synonyms] | w | primary taxonomic authority (describer) | |
| Plagiostomum flavum Brandtner, 1934 | | w | primary taxonomic authority (describer) | 146, fig. 20 |
| Plagiostomum makropharynx Brandtner, 1934 | | w | primary taxonomic authority (describer) | 135 |
| Plagiostomum makroposthia Brandtner, 1934 | | w | primary taxonomic authority (describer) | 145, fig. 19 |
| Plagiostomum megalopharynx Brandtner, 1934 | | w | primary taxonomic authority (describer) | |
| Plagiostomum parasitorum Brandtner, 1934 | | w | primary taxonomic authority (describer) | 136-138, fig. 10 |
| Plagiostomum petrophilum Brandtner, 1934 | | w | primary taxonomic authority (describer) | 139, fig. 12 |
| Plagiostomum porsildi Brandtner, 1934 | | w | primary taxonomic authority (describer) | 140, fig. 13 |
| Plagiostomum vorax Brandtner, 1934 | | w | primary taxonomic authority (describer) | 135-136 |
| Plicastoma cuticulata (Brandtner, 1934) | | w | primary taxonomic authority (describer) | |
| Plagiostomum girardi groenlandica Levinsen, 1879 | [with synonyms] | w | other taxonomic work | 142, fig. 15 |
