|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Helcionelloida - Pelagiellida - Aldanellidae
It was assigned to Mollusca by Sepkoski (2002); and to Aldanellidae by Missarzhevsky (1989), Parkhaev (2001) and Parkhaev (2002).
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.