†family Yochelcionellidae Runnegar and Jell 1976 (mollusk)
Helcionelloida - Helcionellida
Synonym: Enigmaconidae MacKinnon 1985
Full reference: B. Runnegar and P.A. Jell. 1976. Australian Middle Cambrian molluscs and their bearing on early molluscan evolution. Alcheringa 1(1/2):109-132
Parent taxon: Yochelcionelloidea according to P. Bouchet et al. 2005
Sister taxa: Rugaeconidae, Stenothecidae, Trenellidae
Subtaxa: Enigmaconus, Eotebenna, Janospira, Jinonicella, Yochelcionella
Ecology: slow-moving low-level epifaunal grazer