| author | date | title | journal / publication | Ehlers U | 1992 | Frontal glandular and sensory structures in Nemertoderma (Nemertodermatida) and Paratomella (Acoela): ultrastructure and phylogenetic implications for the monophyly of the Euplathelminthes (Plathelm.) | Zoomorphology 112:227-236 |
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