†suborder Streptelasmatina Wedekind 1927 (horn coral)
Parent taxon: Stauriida according to D. Hill 1981
See also Elias 1981
Sister taxa: Arachnophyllina, Aulophyllina, Calostylina, Caniniina, Columnariina, Columnaxonidae, Cyathophyllina, Diffingiina, Heritschioides hammani, Ketophyllina, Kleopatrinidae, Lithostrotionina, Lomaphyllum, Lonsdaleiina, Lophophyllidiidae, Lophotichiidae, Lycophyllina, Mccloudius parvus, Metriophyllina, Mictocystoides, Nanophyllum, Paraceriaster, Petalaxidae, Petraphyllidae, Plerophyllina, Ptenophyllina, Romanophyllidae, Stauriina, Stereolasmatina, Tachylasmatina, Yatsengiidae
Subtaxa: Acrophyllidae Amsdenoididae Cyathaxoniicae Ditoecholasmatidae Kodonophyllidae Mucophyllidae Paliphyllidae Streptelasmatidae Zaphrenticae
Ecology: stationary epifaunal suspension feeder