†suborder Delthyridina Ivanova 1972 (lamp shell)
Parent taxon: Spiriferida according to A. Williams et al. 2006
Sister taxa: Artospirifer, Boucotia, Callicalyptella, Colongina, Costanoplia, Cratospirifer, Crinisaria, Donispirifer, Fimbrispiriferidae, Hollardiella, Kalitvella, Kimatothyris, Luofuia, Martiniidina, Notanoplia, Notoparmella, Ornothyrella, Paracomposita, Paracostanoplia, Paraplicanoplia, Pararhynchospirina, Parunicinella, Plicambocoelia, Plicanoplites, Plicatosyrinx, Pustulatia, Rariella, Rukavischnikovia, Septaparmella, Serrulatrypa, Sikasella, Spiriferidina, Tangxiangia, Tegulispirifer, Thecideidina, Turganiella, Weibeia, Xenospirifer
Subtaxa: Delthyridoidea Reticularioidea
Ecology: stationary epifaunal suspension feeder