Rhynchonellata - Rhynchonellida
Synonym: Stenoscismatacea Oelert 1887 [replaced name]
Parent taxon: Rhynchonellida according to A. Williams et al. 2002
Sister taxa: Ancistrorhynchoidea, Antistrixia, Apodosia, Barzellinia, Camarotoechioidea, Chapursania, Dimerelloidea, Disphenia, Dorsisinus, Hemithiridoidea, Isjuminelina, Lambdarinoidea, Laosia, Latirhynchia, Norelloidea, Omolonorhynchia, Pompoecilorhynchus, Praecyclothyrididae, Pseudonudirostra, Pugnacoidea, Rhynchonelloidea, Rhynchoporoidea, Rhynchotetradoidea, Rhynchotrematoidea, Sacothyropsis, Seminula, Tatjamoa, Uncinuloidea, Uncinuloides, Wellerelloidea, Yunshanella, Chivatschella orotschensis, Payuella obscura, Plekonina spissatella, Pseudopugnax planissima, Altaethyrella zhejiangensis
Subtaxa: Atriboniidae, Psilocamaridae, Stenoscismatidae
Ecology: stationary epifaunal suspension feeder