Retaria is a clade within the supergroup Rhizaria containing the Foraminifera and the Radiolaria.[1] In 2019, the Retaria were recognized as a basal Rhizaria group, as sister of the Cercozoa.[2]
SAR Supergroup Rhizaria Cercozoa 
Retaria Foraminifera 
Polycystinea 
Acantharea 
Sticholonchea 
Halvaria Stramenopiles 
Alveolata 
References
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^ Moreira D, von der Heyden S, Bass D, López-García P, Chao E, Cavalier-Smith T (July 2007). "Global eukaryote phylogeny: Combined small- and large-subunit ribosomal DNA trees support monophyly of Rhizaria, Retaria and Excavata". Mol. Phylogenet. Evol. 44 (1): 255–66. doi:10.1016/j.ympev.2006.11.001. PMID 17174576.
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^ Irwin, Nicholas A.T.; Tikhonenkov, Denis V.; Hehenberger, Elisabeth; Mylnikov, Alexander P.; Burki, Fabien; Keeling, Patrick J. (2019-01-01). "Phylogenomics supports the monophyly of the Cercozoa". Molecular Phylogenetics and Evolution. 130: 416–423. doi:10.1016/j.ympev.2018.09.004. ISSN 1055-7903. PMID 30318266.
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