Radiolaria - Nassellaria - Williriedellidae

Full reference: L. O'Dogherty, M. Bill, S. Gorican, P. Dumitrica, and H. Masson. 2006. Bathonian radiolarians from an ophiolitic mélange of the Alpine Tethys (Gets Nappe, Swiss-French Alps). Micropaleontology 51(6):425-485

Parent taxon: Williriedellidae according to L. O'Dogherty et al. 2006

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

Subtaxa: Helvetocapsa lemanensis, Helvetocapsa matsuokai, Helvetocapsa minoensis, Helvetocapsa nanjoensis, Helvetocapsa plicata, Helvetocapsa prealpina

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Type: Tricolocapsa matsuokai

Ecology: passively mobile planktonic omnivore