| author | date | title | journal / publication | Ehlers U, Ax P | 1974 | Interstitielle Fauna von Galapagos VIII. Trigonostominae (Turbellaria, Typhloplanoida). | Mikro des Meeres 30:1-33 (639-671) |
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| Ceratopera bifida Ehlers & Ax, 1974 | w | primary taxonomic authority (describer) | 18 (656)- 22(660) | |
| Ceratopera paragracilis Ehlers & Ax, 1974 | w | primary taxonomic authority (describer) | ||
| Ptychopera scutulifera Ehlers & Ax, 1974 | w | primary taxonomic authority (describer) | ||
| Trigonostomum galapagoense Willems, Artois, Vermin, & Schockaert, 2004 | w | other taxonomic work | 664-666, 668; Fig 13a-c |