Glissomonadida Howe & Cavalier-Smith 2009, emend. Hess et al. 2013
Small (<15 µm), naked biflagellate cells, bacterivorous or algaevorous.
1. Viridiraptor Hess and Melkonian 2013
Viridiraptor invadens Hess and Melkonian 2013
Viridiraptor invadens has two reserve basal bodies. When a cell is ready to divide, it forms two new cilia which will move subsequently to the opposite end of the cell.
Spirogyra infected by Viridiraptor invadens (left side) and Pseudospora parasitica Cienkowski 1858 (right side).