†subfamily Heleninae Hull 1997 (radiolarian)
Protozoa - Spumellaria - Parvivaccidae
Parent taxon: Parvivaccidae according to P. De Wever et al. 2001
Sister taxa: Acaeniotylinae, Leugeoninae, Parvivaccinae
Subtaxa: Helena Tappanella
Type: Helena
Ecology: passively mobile planktonic omnivore
Distribution:
• Jurassic to Cretaceous of the Russian Federation (1 collection)
• Jurassic of Antarctica (1), United States (2: California, Oregon)
Total: 4 collections including 6 occurrences