†Circulaforma Cheng 1986 (radiolarian)
Radiolaria - Albaillellaria - Ceratoikiscidae
PaleoDB taxon number: 69
Parent taxon: Ceratoikiscidae according to P. De Wever et al. 2001
Sister taxa: Ceratoikiscum, Glanta, Helenifore, Lapidopiscum, Protoceratoikiscum, Protoholoeciscus, Raphidociclicus
Subtaxa: Circulaforma admissarius, Circulaforma delicata
Type: Circulaforma delicata
Ecology: passively mobile planktonic omnivore