Stramenopile taxa

Gyrista is a clade of stramenopile protists containing three diverse groups: the mostly photosynthetic Ochrophyta, the parasitic Pseudofungi, and the recently described group of nanoflagellates known as Bigyromonada. Members of this clade are characterized by the presence of a helix or a double helix/ring system in the ciliary transition region.

Sagenista is a subphylum of heterokonts containing the labyrinthulids and Eogyrea, a class of yet uncultured protists. Originally, it contained the Labyrinthulids and bicosoecids. The bicosoecids have been removed, and Eogyrea were added, in order to make the group monophyletic.

Bigyromonads (formally known as Bigyromonadea or Bigyromonada) are a lineage of single-celled non-photosynthetic stramenopiles that contains two distinct groups: Developea, free-living phagotrophic predators, and Pirsoniales, parasitoids of diatoms.