| Trepaxonemata | |
|---|---|
| |
| Spermatozoa of various Trepaxonemata (transverse sections, transmission electron microscopy) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Subphylum: | Rhabditophora |
| Subclass: | Trepaxonemata Ehlers, 1985 |
| Subgroups | |
Trepaxonemata (from trepa-, spiral + axoneme) is a subclass of the Platyhelminthes or flatworms.[1] It includes all parasitic flatworms (clade Neodermata) and several free-living species that were previously grouped in the now obsolete class Turbellaria. Therefore, it contains the majority of species in the phylum Platyhelminthes, excluding the Catenulida, and the Macrostomorpha.
- ^ Ehlers, U. (1985). Das Phylogenetische System der Plathelminthes. Stuttgart: G. Fischer.