Tetrahelia
| Tetrahelia | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Clade: | Diaphoretickes |
| Phylum: | Cryptista |
| Class: | Endohelea |
| Order: | Axomonadida Cavalier-Smith in Yabuki et al. 2012 emend. 2022 |
| Family: | Tetraheliidae Cavalier-Smith 2022 |
| Genus: | Tetrahelia Cavalier-Smith 2022 |
| Species: | T. pterbica
|
| Binomial name | |
| Tetrahelia pterbica (Mikrjukov & Patterson 2000) Cavalier-Smith 2022[1]
| |
| Synonyms | |
| |
Tetrahelia (from
monotypic genus, containing the sole species Tetrahelia pterbica, previously classified as Tetradimorpha.[1]
Description
Tetrahelia are unicellular
nucleus. The axopodia have several irregularly arranged microtubules and irregularly flattened extrusomes, instead of the kinetocysts seen in Heliomorpha and Tetradimorpha radiata. The cell size is larger than 60 μm, and the centrosome itself measures between 18 and 20 μm. There is a thick pseudopellicle layer beneath the cell membrane.[1]
The life cycle of Tetrahelia contains a lazily swimming, purely flagellate stage with fully retracted axopodia.[1]