|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Helcionelloida - Pelagiellida - Aldanellidae
It was assigned to Pelagiellidae by Golubev (1976); to Aldanellidae by Linsley and Kier (1984) and Missarzhevsky (1989); to Mollusca by Sepkoski (2002); and to Khairkhaniidae by Parkhaev (2002).
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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.