Gymnolaemata - Cheilostomata

Parent taxon: Ascophora according to A. H. Cheetham 1962

Sister taxa: Cleidochasmatidae, Phylactellidae

Subtaxa: Cycloperiella, Metradolium, Pachyegis, Stomachetosella, Tremoschizodina

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Ecology: stationary epifaunal suspension feeder