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・ Polykarp Leyser III
・ Polykarp Leyser IV
・ Polykarp Leyser the Elder
・ Polykastano
・ Polykastro
・ Polykastro F.C.
・ Polykay
・ Polyketide
・ Polyketide synthase
・ Polyketide synthesis cyclase family
・ Polyketone
・ Polyking
・ Polykleitos
・ Polykleitos the Younger
・ Polyknight
Polykrikaceae
・ Polykrikos kofoidii
・ PolyL
・ Polylactic acid
・ Polylakko
・ Polylateral Development
・ Polylepion
・ Polylepis
・ Polylepis australis
・ Polylepis besseri
・ Polylepis crista-galli
・ Polylepis hieronymi
・ Polylepis incana
・ Polylepis lanuginosa
・ Polylepis microphylla


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Polykrikaceae : ウィキペディア英語版
Polykrikaceae

The Polykrikaceae (also known as Polykrikidae) are a family of athecate dinoflagellates of the order Gymnodiniales. Members of the family are known as polykrikoids.
The family contains two genera: ''Polykrikos'' and ''Pheopolykrikos''.
==Characteristics==
The most distinctive feature of polykrikoids is their formation of multinucleate "pseudocolonies" consisting of an even number of subunit zooids. The two genera differ in number of nuclei; possessing two nuclei regardless of the number of zooids is a synapomorphy for ''Polykrikos'', whereas ''Pheopolykrikos'' possess equal numbers of nuclei and zooids.
Along with the Warnowiaceae (warnowiids), polykrikoids are known for possessing unusually complex subcellular structures. In particular, an extrusome complex of two organelles called the nematocyst and taeniocyst is considered a synapomorphy for ''Polykrikos''.〔 Molecular phylogenetics studies suggest some inconsistency in the taxonomy of this group, particularly in the assignment of species to one of the two genera.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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