†subfamily Postibullinae Sumrall 2000
Edrioasteroidea - Isorophida - Agelacrinitidae
Parent taxon: Agelacrinitidae according to C. D. Sumrall et al. 2006
Sister taxa: Agelacrinites, Agelacrinitinae, Bellastrella, Cooperidiscus, Dinocystis, Discocystinae, Hystrichopsydrax, Krama, Lepidodiscus, Neoisorophusella, Persiadiskos, Postibulla, Savagella, Thresherodiscus, Ulrichidiscus
Subtaxa: Parapostibulla Pyrgopostibulla
Ecology: stationary low-level epifaunal suspension feeder
Distribution: