Bigyra is a grouping of

heterokont Heterokonts are a group of protists (formally referred to as Heterokonta, Heterokontae or Heterokontophyta). The group is a major line of eukaryotes. Most are algae, ranging from the giant multicellular kelp to the unicellular diatoms, which a ...

organisms. It includes Bicosoecida, Blastocystis and Labyrinthulida. It has also been described as containing

Opalozoa Opalozoa is a subphylum of heterotrophic protists of the phylum Bigyra, and is the sister group to Sagenista. Opalozoans are non-photosynthetic heterokonts that are ancestrally phagotrophic but many times have evolved to be osmotrophic sapr ...

, Bicoecia, and Sagenista.

Phylogeny

The cladogram below shows the internal relationships within Bigyra:

Classification

The modern taxonomy of Bigyra is as follows: *Phylum Bigyra **Subphylum

***Infraphylum Placidozoa ****Superclass Wobblata ( paraphyletic) *****Class Placididea *****Class Nanomonadea *****Class

Opalomonadea Opalomonadea is a class of biciliate phagotrophic opalozoans with an anterior hairy cilium, often from anaerobic Anaerobic means "living, active, occurring, or existing in the absence of free oxygen", as opposed to aerobic which means "living, ...

****Superclass

Opalinata Opalinata is a superclass of non- phagotrophic heterokonts that unites the classes Opalinea and Blastocystea, and is the sister group to Opalomonadea. Description When Opalinata was first erected as a taxon in 1926, it was placed as the sole c ...

*****Class

Opalinea The opalines are a small group of peculiar heterokonts, currently assigned to the family Opalinidae, in the order Slopalinida. Their name is derived from the opalescent appearance of these microscopic organisms when illuminated with full sunli ...

*****Class

Blastocystea ''Blastocystis'' is a genus of single-celled heterokont parasites belonging to a group of organisms that are known as the Stramenopiles (also called Heterokonts) that includes algae, diatoms, and water molds. Blastocystis consists of several ...

***Infraphylum Bikosia ****Class Bikosea **Subphylum Sagenista ***Class Labyrinthulea ***Class Eogyrea

References

External links

* * SAR supergroup unranked clades {{heterokont-stub