|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
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||"Shell cap-shaped, low conical, moderately elongated. Apex slightly hooked and displaced anteriorly. Posterior field convex in apical area, becoming flattened near aperture. Anterior field straight, sometimes becomes concave due to train formation. Lateral fields flattened or slightly convex. Aperture oval or rounded rectangular, sometimes with flaring anterior part, forming wide train. Shell exterior granular, more distinctly near apertural margin and smoothing out towards apex."|