Radiolaria - Nassellaria - Williriedellidae

Parent taxon: Williriedellidae according to P. De Wever et al. 2001

Sister taxa: Cryptamphorella, Excentropylomma, Helvetocapsa, Hemicryptocapsa, Hiscocapsa, Holocryptocanium, Holocryptocapsa, Immersothorax, Minocapsa, Praewilliriedellum, Striatojaponocapsa, Trisyringium, Williriedellum, Zhamoidellum

Subtaxa: none

Ecology: passively mobile planktonic omnivore