| Macrostomum curvituba Luther, 1947 | June 1990 to May 1991 | | medium sand | |
| Coelogynopora schulzii Meixner, 1938 | June 1990 to May 1991 | | medium sand | |
| Paramonotus hamatus (Jensen, 1878) | June 1990 to May 1991 | | medium sand | |
| Pseudosyrtis subterranea (Ax, 1951) | June 1990 to May 1991 | | medium sand | |
| Coronhelmis multispinosus Luther, 1948 | June 1990 to May 1991 | | medium sand | |
| Vejdovskya ignava Ax, 1951 | June 1990 to May 1991 | | medium sand | |
| Macrostomum distinguendum Papi, 1951 | 1993 or earlier | | | Elbe. Limnischer Gezeitenstrand aus Mittelsand bei Hamburg-Harburg. |
| Pseudosyrtis neiswestnovae Riemann, 1965 | 1966 or earlier | | | Elbe. In bewegten Sandböden der Fahrrinne (Stromrinne, Strommitte, Flusssohle). Regelmässig oberhalb von Hamburg in 2-8 m Wassertiefe. Seltener in der Unterelbe mit westlichstem Fundort in Höhe von Stader Sand; 10 m Wassertiefe. |
| Macrostomum sp. Ax, 1957 | 1957 or earlier | | | Im limnischen Mesopsammal der Elbe beobachtete [Ax 1957] eine weitere Macrostomum-Art, für welche eine Verwandtschaft mit der boreoalpin verbreiten M. karlingi Papi vermutet wurde. |
| Macrostomum curvituba Luther, 1947 | 1957 or earlier | | | Süsswasser: Hydropsammal und Küstengrundwasser des Elbufers |
| Coelogynopora sp. Rixen, 1961 | 1957 or earlier | | | Süsswasser: Küstengrundwasser der Elbe bei Hamburg. |
| Vejdovskya ignava Ax, 1951 | 1957 or earlier | | | Süsswasser: Hydro- und Hygropsammal der Elbe bei Hamburg. |
| Bresslauilla relicta Reisinger, 1929 | 1957 or earlier | | | Mittel- bis Grobsand nahe der Spülzone |
| Gyratrix hermaphroditus Ehrenberg, 1831 | 1957 or earlier | | | fand die Art im Litoral der Elbe bei Hamburg. |
| Phaenocora clavigera Hofsten N, 1907 | | | | |
| Phaenocora megalops (Duges, 1830) | Before 1961 | | | |
| Planaria torva (Müller, 1773) | 1903 or earlier | | | |
| Stenostomum ciliatum Kepner & Carter, 1931 | 1903 or earlier | | | |
| Stenostomum leucops (Duges, 1828) | 1903 or earlier | | | |
| Microstomum lineare (Müller, 1773) | 1903 or earlier | | | |
| Macrostomum hystrix Ørsted, 1843 | 1903 or earlier | | | |
| Dendrocoelum lacteum (Müller, 1773) | 1903 or earlier | | | |
| Polycelis nigra (Müller, 1774) | 1903 or earlier | | | |
| Plagiostomum lemani Forel & Du Plessis, 1874 | 1903 or earlier | | | |
| Prorhynchus stagnalis Schultze, 1851 | 1903 or earlier | | | |
| Microdalyellia armigera (Schmidt, 1862) | 1903 or earlier | | | |
| Phaenocora gracilis (Vejdovsky, 1895) | 1903 or earlier | | | |
| Phaenocora unipunctata (Ørsted, 1843) | 1903 or earlier | | | |
| Olisthanella truncula (Schmidt, 1858) | 1903 or earlier | | | |
| Mesostoma ehrenbergii (Focke, 1836) | 1903 or earlier | | | |
| Mesostoma lingua (Abildgaard, 1789) | 1903 or earlier | | | |
| Mesostoma tetragonum (Müller, 1774) | 1903 or earlier | | | |
| Gyratrix hermaphroditus Ehrenberg, 1831 | 1903 or earlier | | | |
| Rhynchoscolex simplex Leidy, 1852 | 1966 or earlier | | | Elbe river, Bank near Hamburg |