|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Helcionelloida - Helcionellida - Carinopeltidae
It was assigned to Purellidae by Vassiljeva (1990); to Igarkiellidae by Parkhaev (2002); to Mollusca by Sepkoski (2002); and to Carinopeltidae by Wagner (2017).
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.