| author | date | title | journal / publication | Sopott-Ehlers B, Ehlers U | 2001 | abs. | Spermatozoa of Psammomacrostomum turbanelloides (Plathelminthes, Macrostomida)- sub-microscopic anatomy and phylogenetic implications. | Invertebrate Reproduction & Development. 39(2): 81-86 |
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