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 [The Tommotian Stage and the Cambrian lower Boundary problem]. Trudy Geoligske Institut Leningrad 206:1-379
Parent taxon: Helcionellinae according to P. Y. Parkhaev and Y. Demidenko 2010
See also Bengtson 1992, Devaere et al. 2013, Feng et al. 2000, Li et al. 2007, Missarzhevsky 1989, Missarzhevsky and Mambetov 1981, Parkhaev 2002, Runnegar and Jell 1976, Sepkoski 2002, Wagner 2023 and Wang 1994
Sister taxa: Absidaticonus, Aegitellus, Anabarella, Anabaroconus, Anhuiconus, Anuliconus, Asiapatella, Asperconella, Auricullina, Bemella, Calyptroconus, Capitoconus, Chuiliella, Cycloholcus, Daedalia, Davidonia, Emarginoconus, Eocyrtolites, Fenqiaronia, Figurina, Guadalquivirospira, Hampilina, Hampilininae, Helcionella, Hispanoconus, Hujiagouella, Ilsanella, Kuonamkaella, Lenoconus, Leptostega, Manasoconus, Marocella, Minastirithella, Miroconulus, Nyuella, Obtusoconus, Oelandia, Oelandiella, Papilloconus, Parapelagiella, Pararaconus, Paucella, Pedrocheotheca, Perssuakiella, Postacanthella, Prosinuites, Protowenella, Pseudopollicina, Randomia, Securiconus, Tannuella, Totoralia, Truncatoconus, Tuoraconus, Yangtzeconinae
Subtaxa: Dianella dianensis Igorella cyrtoliformis Igorella durara Igorella hamata Igorella iacobinica Igorella lata Igorella minuta Igorella monstrosa Igorella orientalis Igorella shabaktiensis Igorella talassica Igorella ungulata Igorella xilingensis Igorella xundianensis Songlinella formosa
Type: Igorella ungulata
Ecology: slow-moving low-level epifaunal detritivore
Distribution:
• Solvan of Morocco (2 collections)
• Ordian of Australia (3)
• Cambrian of Australia (1), Canada (2: Newfoundland and Labrador), China (21), Germany (1), Kazakhstan (5), Kyrgyzstan (1), the Russian Federation (28)
Total: 64 collections including 66 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.