Placidozoa is a recently defined non-
photosynthetic
Photosynthesis ( ) is a Biological system, system of biological processes by which Photoautotrophism, photosynthetic organisms, such as most plants, algae, and cyanobacteria, convert light energy, typically from sunlight, into the chemical ener ...
lineage of
Stramenopile
The stramenopiles, also called heterokonts, are protists distinguished by the presence of stiff tripartite external hairs. In most species, the hairs are attached to flagella, in some they are attached to other areas of the cellular surface, an ...
s.
Phylogeny
In 2016, Philippe Silar presented the following phylogeny for the Placidozoa:
Taxonomy
Infraphylum Placidozoa
Cavalier-Smith 2013
* Superclass
Wobblata Cavalier-Smith 2006 stat. n. 2013 (
paraphyletic
Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In co ...
)
** Class
Placididea Moriya, Nakayama & Inouye 2002
*** Order
Placidida Moriya, Nakayama & Inouye 2002 lacidae Cavalier-Smith 2006**** Family
Placidiaceae Moriya, Nakayama & Inouye 2002
***** Genus ''
Pendulomonas''
Tong 1997
***** Genus ''
Placidia
Placidia () was a 5th-century Roman noblewoman and briefly empress in the Western Roman Empire. Her father was Valentinian III, Roman emperor in the West from 425 to 455. In 455, shortly after her marriage to Olybrius, she was captured by Gaiser ...
''
Moriya, Nakayama & Inouye 2002
***** Genus ''
Wobblia''
Moriya, Nakayama & Inouye 2000
***** Genus ''
Allegra''
Rybarski et al. 2015
** Class
Nanomonadea Cavalier-Smith 2013
*** Order
Uniciliatida Cavalier-Smith 2013
**** Family
Solenicolidae Cavalier- Smith 2013
***** Genus ''
Solenicola''
Pavillard 1916
**** Family
Incisomonadidae Cavalier-Smith & Scoble 2013
***** Genus ''
Incisomonas''
Scoble & Cavalier-Smith 2013
** Class
Opalomonadea Cavalier-Smith 2013
*** Genus ''
Barthelona''
Bernard, Simpson & Patterson 2000
*** Genus ''
Quasibodo''
Bernard, Simpson & Patterson 2000
* Superclass
Opalinata Wenyon 1926 emend. Cavalier-Smith 1996 stat. n. 2006
** Class
Blastocystea Zierdt et al. 1967 lastocysta Zierdt 1978; Blastocystina Zierdt 1978*** Order
Blastocystida Zierdt 1978
**** Family
Blastocystidae Jiang & He 1988 non Jaekel 1918
***** Genus ''
Blastocystis''
Alexeev 1911 non Jaekel 1918
** Class
Opalinea Wenyon 1926 stat. n. Cavalier-Smith 1993 emend. Cavalier-Smith 2013
*** Order
Proteromonadida Grassé 1952 emend. Cavalier-Smith 1993 roteromonadea Caval.-Sm. 1997**** Family
Proteromonadidae Grassé 1952
***** Genus ''
Proteromonas''
Kunstler 1883 'Prowazekella''
Alexeieff 1912">Prowazekella.html" ;"title="'Prowazekella">'Prowazekella''
Alexeieff 1912
*** Order Opalinida
Poche 1913 stat. n. Hall 1953 emend. Cavalier-Smith
**** Family Karotomorphidae
Travis 1934 [Karotomorphida
Cavalier-Smith 1993]
***** Genus ''Karotomorpha''
Travis 1934 'Tetramastix''
Alexeieff 1916 non Zacharias 1898">Tetramastix.html" ;"title="'Tetramastix">'Tetramastix''
Alexeieff 1916 non Zacharias 1898
**** Family Opalinidae
Claus 1874
***** Genus ''Bezzenbergia''
Earl 1973
***** Genus ''Hegneriella''
Earl 1971
***** Genus ''Cepedea''
Metcalf 1920
***** Genus ''
Opalina''
Purkinje & Valentin 1835
***** Genus ''
Protozelleriella''
Delvinquier, Markus & Passmore 1991
***** Genus ''
Zelleriella''
Metcalf 1920
***** Genus ''
Protoopalina''
Metcalf 1918
References
External links
{{Taxonbar, from=Q26816887
Stramenopile phyla