Rhynchonellata - Rhynchonellida

Parent taxon: Hemithiridoidea according to A. Williams et al. 2002

Sister taxa: Cyclothyrididae, Hemithirididae, Notosariidae, Septirhynchiidae, Triasorhynchiidae

Subtaxa: Cretirhynchiinae, Gibbirhynchiinae, Isjuminellinae, Kallirhynchiinae, Tetrarhynchiinae, Viarhynchiinae

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Ecology: stationary epifaunal suspension feeder