| Citation | Knauss, E.B. and R.M. Rieger, 1979 Fine structure of the male reproductive system in two species of Haplognathia Sterrer (Gnathostomulida, Filospermoidea). Zoomorphologie 94:33-48. |
| Ref. | 1537 Knauss, E.B. and R.M. Rieger, 1979 |
| Page | 34 |
| Named Used as Valid | Haplognathia lyra |
| Locality | |
| Distribution |