†order Pelagiellida (mollusk)
Parent taxon: Helcionelloida according to P. J. Wagner 2011
Sister taxa: Beshtashella, Ceratoconidae, Emargimantus, Helcionellida, Helcionelliformes, Michniakia, Rostroconus
Subtaxa: Pelagielloidea
Ecology: epifaunal grazer