Class Radiolaria Müller 1858 (radiolarian)
Parent taxon: Retaria according to Y. Ishitani et al. 2011
Sister taxon: Foraminifera
Subtaxa: Amphicraspedum, Copiconica, Durahelenifore, Grosmorneus, Gyrosphaera, Labyrinthosphaera, Pentinastrum, Pheodaria, Polycystina, Rotasphaeracea, Spongosphaera, Stylotrochus, Triactiscus, Veles
Ecology: passively mobile planktonic omnivore