†family Holocystitidae Miller 1889
Sphaeronitida - Holocystitidae
Parent taxon: Sphaeronitida according to S. Sheffield and C. Sumrall 2017
See also Jell 2010 and Paul 1971
Sister taxa: Aristocystitidae, Sphaeronitidae
Subtaxa: Holocystites Paulicystis Pentacystis Pustulocystis Trematocystinae Trematocystis
Ecology: stationary epifaunal suspension feeder
Distribution: