Retaria is a clade within the supergroup Rhizaria containing the Foraminifera and the Radiolaria. In 2019, the Retaria were recognized as a basal Rhizaria group, as sister of the Cercozoa.
Taxonomy
In 2018, Cavalier-Smith called this group Ectoreta and grouped it with Endomyxa and called this new grouping Retaria instead. Cavalier-Smith et al., 2018 proposed to exclude Sticholonchea from Radiozoa and proposed this scheme instead:
- Phylum Retaria
- Subphylum Endomyxa
- Superclass Marimyxia
- Superclass Proteomyxia
- Subphylum Ectoreta
- Infraphylum Foraminifera
- Infraphylum Radiozoa
- Infraphylum Sticholonchia
- Subphylum Endomyxa
Exclusion of Endomyxa from Cercozoa was challenged in 2019. Retaria is generally divided into two phyla Foraminifera and Radiolaria.
