Synonym: Janthinoidea Lamarck 1810
Parent taxon: Caenogastropoda according to C. S. Cataldo 2017
See also Beesley 1998, Bouchet et al. 2005, Duerr 2004, Ponder and Warén 1988, Squires and Saul 2003 and Todd 2001
Sister taxa: Architaenioglossa, Carinomphalus, Cassianozyga, Cataldia, Cerithimorpha, Cerithioidea, Coelodiscidae, Coelostylinidae, Cyclophoracea, Dendropupoidea, Dzikella, Idahospira, Littorinimorpha, Loxotomella, Meekospiridae, Mesogastropoda, Neontaenioglossa, Neotaenioglossa, Orthonematoidea, Palaeostyloidea, Peruneloidea, Perunelomorpha, Pragoscutulidae, Prisconatica, Pseudomelanoidea, Soleniscoidea, Sorbeoconcha, Spanionematidae, Strobeidae, Trinema, Vanikoroidea, Ventrosia, Zygopleuroidea
Subtaxa: Epitoniacea Epitoniidae Janthinidae Nystiellidae Scalacea
Ecology: epifaunal carnivore