Helcionelloida - Helcionellida - Igarkiellidae

Full reference: P. Y.u. Parkhaev. 2002. Phylogenesis and the systematics of the Cambrian univalved mollusks. Paleontological Journal 35(1):27-39

Parent taxon: Helcionelloidea according to P. Y. Parkhaev and Y. Demidenko 2010

See also Bouchet et al. 2005 and Parkhaev 2002

Sister taxa: Carinopeltidae, Procarinariidae

Subtaxa: Asperoconus

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Ecology: slow-moving low-level epifaunal detritivore

Distribution: found only at Yangtzeconus priscus - Archaeospira ornata assemblage, Yangtze Gorge, Yichang (Cambrian of China)

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