Helcionelloida - Helcionellida - Helcionellidae

Full reference: J. S. Peel. 1988. Molluscs of the Holm Dal Formation (late Middle Cambrian), central North Greenland. Meddelelser om Grønland, Geosciences 20(11):145-168

Parent taxon: Helcionellidae according to G. Geyer 1986

Sister taxa: Absidaticonus, Aegitellus, Anabaroconus, Anhuiconus, Anuliconus, Asiapatella, Asperconella, Auricullina, Bemella, Calyptroconus, Capitoconus, Chuiliella, Cycloholcus, Daedalia, Emarginoconus, Eocyrtolites, Fenqiaronia, Figurina, Ginella, Guadalquivirospira, Hampilina, Hampilininae, Helcionella, Hispanoconus, Hujiagouella, Igorella, Kuonamkaella, Lenoconus, Leptostega, Marocella, Miroconulus, Nyuella, Oelandia, Papilloconus, Pararaconus, Paucella, Pedrocheotheca, Postacanthella, Prosinuites, Protowenella, Pseudomyona, Pseudopollicina, Randomia, Salanyella, Securiconus, Tannuella, Truncatoconus, Yangtzeconinae

Subtaxa: Perssuakiella troelseni

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Ecology: slow-moving low-level epifaunal detritivore