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Sar or Harosa (informally the SAR supergroup) is a clade that includes stramenopiles (heterokonts), alveolates, and Rhizaria. The first letter of each group provides the "SAR" in the name (alternatively spelled "RAS").〔 The term "Harosa" (at the subkingdom level) has also been used for this grouping by Cavalier-Smith (2010). Adl ''et al.'' (2012) formalized the SAR supergroup as the node-based taxon Sar. They defined it as: :''Sar: the least inclusive clade containing ''Bigelowiella natans'' Moestrup & Sengco 2001 (Rhizaria), ''Tetrahymena thermophila'' Nanney & McCoy 1976 (Alveolata), and ''Thalassiosira pseudonana'' Cleve 1873 (Stramenopiles). This is a node-based definition in which all of the specifiers are extant.'' Members of the SAR supergroup were once included under the separate supergroups Chromalveolata and Rhizaria, until phylogenetic studies confirmed that stramenopiles and alveolates diverged together with Rhizaria. This apparently excluded haptophytes and cryptomonads, leading Okamoto ''et al.'' (2009) to propose the clade Hacrobia to accommodate them. ==See also== *Amoebozoa *Archaeplastida *Excavata *Opisthokonta 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「SAR supergroup」の詳細全文を読む スポンサード リンク
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