|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Helcionelloida - Helcionellida - Helcionellidae
It was assigned to Helcionellidae by Parkhaev (2002); to Mollusca by Sepkoski (2002); and to Helcionellinae by Parkhaev and Demidenko (2010).
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.
|P. Y. Parkhaev and Y. Demidenko 2010||"Cap-shaped, low conical shell, very rapidly expanding from apex towards aperture. Apex hooked and displaced posteriorly, almost reaching posterior apertural margin. Aperture circular, with shallow sinus below apex. Shell ornamentation represented by distinct concentric growth lines."|