| Citation | Sorensen, M.V. and W. Sterrer, 2002 New characters in the Gnathostomulid mouth parts revealed by scanning electron microscopy. Journal of Morphology 253:310-334. |
| Ref. | 1488 Sorensen, M.V. and W. Sterrer, 2002 |
| Page | 311 |
| Named Used as Valid | Haplognathia filum |
| Locality | |
| Distribution |