Rhynchonellata - Orthida

Parent taxon: Dalmanelloidea according to A. Williams et al. 2000

Sister taxa: Angusticardiniidae, Dalmanellidae, Harknessellidae, Heterorthidae, Hypsomoniidae, Kayserellidae, Mystrophoridae, Paurorthidae, Platyorthidae, Portranellidae, Proschizophoriidae, Rhipidomellidae, Tyronellidae

Subtaxa: Dicoelosia, Epitomyonia, Teichertina

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Type: Dicoelosia

Ecology: stationary epifaunal suspension feeder