Helcionelloida - Helcionellida - Helcionellidae
Synonyms: Bemellina Vassiljeva 1998, Chabaktiella Missarzhevsky and Mambetov 1981, Compressoconus Vassiljeva 1998, Dianella Wang 1994, Igorellina Missarzhevsky 1989, Maidipingoconus Yü 1979, Songlinella Chen et al. 1981
Full reference: A. Y. Rozanov, V. V. Missarzhevsky, N.A. Volkova, L.G. Voronova, I.N. Krylov, B.M. Keller, I.K. Korolyuk, K. Lendzion, R. Mikhnyar, N.G. Pykhova, and A.D. Sidorov. 1969. Tommotskiu jarus i problema nizhney granisty kembriya. Trudy Geoligske Institut Leningrad 206:1-379
Parent taxon: Helcionellinae according to P. Y. Parkhaev and Y. Demidenko 2010
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, Kuonamkaella, Lenoconus, Leptostega, Marocella, Miroconulus, Nyuella, Oelandia, Papilloconus, Pararaconus, Paucella, Pedrocheotheca, Perssuakiella, Postacanthella, Prosinuites, Protowenella, Pseudomyona, Pseudopollicina, Randomia, Salanyella, Securiconus, Tannuella, Truncatoconus, Yangtzeconinae
Subtaxa: Chabaktiella shabaktiensis, Dianella dianensis, Igorella cyrtoliformis, Igorella durara, Igorella hamata, Igorella lata, Igorella minuta, Igorella monstrosa, Igorella orientalis, Igorella talassica, Igorella ungulata, Igorella xilingensis, Igorella xundianensis, Songlinella formosa
Type: Igorella ungulata
Ecology: slow-moving low-level epifaunal detritivore