Bicosoecid
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Bicosoecida ( ICZN) or Bicosoecales/Bicoecea (
ICBN The ''International Code of Nomenclature for algae, fungi, and plants'' (ICN) is the set of rules and recommendations dealing with the formal botanical names that are given to plants, fungi and a few other groups of organisms, all those "trad ...
) is an order of Bikosea, a small group of unicellular flagellates, included among the
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 ...
s. Informally known as bicosoecids, they are a small group of unicellular flagellates. The cells are free-living, with no chloroplasts, and in some genera are encased in a lorica. The name of the
type genus In biological taxonomy, the type genus is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearing type of a nominal ...
''
Bicosoeca ''Bicosoeca'' is a genus of bicosoecids in the family Bicosoecaceae. It is the type genus of its family. The name ''Bicosoeca'', described by James-Clark in 1866, is derived from Greek roots (, vase, bowl, plus , inhabit). The philologically ...
'' described by James-Clark in 1866 is derived from Greek roots (, vase, bowl, plus ''oekein'', inhabit). The philologically preferable compound would be ''Bicoeca'', as "corrected" by
Stein Stein is a German, Yiddish and Norwegian word meaning "stone" and "pip" or "kernel". It stems from the same Germanic root as the English word stone. It may refer to: Places In Austria * Stein, a neighbourhood of Krems an der Donau, Lower Aust ...
in 1878 and followed by most subsequent authors. However, according to the
ICBN The ''International Code of Nomenclature for algae, fungi, and plants'' (ICN) is the set of rules and recommendations dealing with the formal botanical names that are given to plants, fungi and a few other groups of organisms, all those "trad ...
and ICZN, the original spelling of the name cannot be considered incorrect and it must be used in its original form. The group was formerly considered to be related to the
Chrysophyceae The Chrysophyceae, usually called chrysophytes, chrysomonads, golden-brown algae or golden algae are a large group of algae, found mostly in freshwater. Golden algae is also commonly used to refer to a single species, '' Prymnesium parvum'', whic ...
. Some authors use the vernacular term "bicosoecid" (or "bicoecid") in a narrower sense, only for ''Bicosoeca'', applying "bicoeceans" to ''Bicosoeca'' and related groups like '' Cafeteria''. With the advent of using molecular phylogenies to resolve relationships of many eukaryotes the original circumscription of bicosoecids has been greatly expanded upon to include other orders and the rank has changed from an order to a class.


Classification

* Family Labromonadidae
Cavalier-Smith Thomas (Tom) Cavalier-Smith, FRS, FRSC, NERC Professorial Fellow (21 October 1942 – 19 March 2021), was a professor of evolutionary biology in the Department of Zoology, at the University of Oxford. His research has led to disc ...
2006
** Genus '' Labromonas'' Cavalier-Smith 2006 * Family Bicosoecaceae Ritter von Stein 1878 ** ?Genus '' Platytheca'' Stein 1878 nom. nud. ** Genus ''
Bicosoeca ''Bicosoeca'' is a genus of bicosoecids in the family Bicosoecaceae. It is the type genus of its family. The name ''Bicosoeca'', described by James-Clark in 1866, is derived from Greek roots (, vase, bowl, plus , inhabit). The philologically ...
'' Clark 1866 ** Genus '' Codonoeca'' Clark 1867 ** Genus '' Hedraeophysa'' Kent 1880


References


Bibliography

* Hibberd, D. J. (1986). Ultrastructure of the Chrysophyceae. Colorless forms
p. 29-30
In: ''Chrysophytes: Aspects and Problems''. Kristiansen, J. and R.A. Andersen ds. Cambridge University Press, Cambridge.


External links

* Heterokont orders SAR supergroup orders {{Heterokont-stub