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Bigyra
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Bigyra () is a phylum of microscopic eukaryotes that are found at the base of the Stramenopiles clade. It includes three well-known heterotrophic groups Bicosoecida, Opalinata and Labyrinthulomycetes, as well as several small classes initially discovered through environmental DNA samples: Nanomonadea, Placididea, Opalomonadea and Eogyrea. The classification of Bigyra has changed several times since its origin, and its monophyly remains unresolved.
Species
PHYLUM
- KingdomChromista
- PhylumBigyra
纲 见正文 双环总门(Bigyra)是一个不等鞭毛类的子类群[1] 。 包括Bicosoecea，Labyrinthulomycetes[1]，Opalinea，Proteromonadea以及芽囊原虫纲（Blastocystis）[2] 。 参考文献 ^ 1.0 1.1 Riisberg I, Orr RJ, Kluge R; 等. Seven gene phylogeny of heterokonts. Protist. May 2009, 160 (2): 191–204. PMID 19213601. doi:10.1016/j.protis.2008.11.004. 引文格式1维护：显式使用等标签 (link) ^ Cavalier-Smith T, Chao EE. Phylogeny and megasystematics of phagotrophic heterokonts (kingdom Chromista). J. Mol. Evol. April 2006, 62 (4): 388–420. PMID 16557340. doi:10.1007/s00239-004-0353-8. 查 论 编 真核生物 域 古菌 细菌 真核生物 (界 植物 Hacrobia（英语：Template:Hacrobia） 不等鞭毛类（英语：Template:Heterokont） 囊泡虫 有孔虫（英语：Template:Rhizaria） 古虫 变形虫（英语：Template:Amoebozoa） 动物 真菌) 双鞭毛生物多貌生物AH原始色素体生物(A)，或广义植物 綠植界（英语：Viridiplantae）/狭义植物 红藻门 灰胞藻门 定鞭/隐藻生物(H)（有争议） 定鞭藻门 隐藻门 中阳虫门 SAR不等鞭毛/囊泡生物不等鞭毛类(S) 淡色藻总门 双环总门 伪真菌总门 囊泡虫类(A) 纤毛虫门 粘孢子总门 頂複門 双鞭毛虫门 有孔虫界(R) 丝足虫类 有孔虫类 有孔虫门 放射虫门 古虫界 盘嵴亚界 眼虫门 雅各巴虫纲（英语：Jakobea） 透色门 槽虫门（英语：Loukozoa） 后滴门（英语：Metamonad） 马拉维单胞虫纲（英语：Malawimonas） 无根虫门（英语：Apusozoa） 无根单胞虫目（英语：Apusomonadida） Apusomonas Amastigomonas 弯单胞虫目（英语：Ancyromonadida） Ancyromonas 半主虫目（英语：Hemimastigida） Hemimastix Spironema Stereonema Breviata 单鞭毛生物变形虫界 叶足亚门 锥足亚门 Phalansterium 后鞭毛生物动物总界Mesomycetozoea（英语：Mesomycetozoea） 肤
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Bigyra () is a phylum of microscopic eukaryotes that are found at the base of the Stramenopiles clade. It includes three well-known heterotrophic groups Bicosoecida, Opalinata and Labyrinthulomycetes, as well as several small classes initially discovered through environmental DNA samples: Nanomonadea, Placididea, Opalomonadea and Eogyrea. The classification of Bigyra has changed several times since its origin, and its monophyly remains unresolved.
== Ecological diversity == Bigyra is a diverse group of heterotrophic, mainly phagotrophic stramenopiles that lack cell walls. It contains three well-known important groups with widely different ecological functions and morphologies: labyrinthulomycetes, opalines and bicosoecids.