|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||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.
|J. M. Malinky and C.B. Skovsted 2004||Slightly cyrtoconic tubular conch with circular cross-section with the apex terminating in a poorly developed convex inflated septum. Side of conch toward which apex bends possesses coarse annular half rings; rings have steeply dipping sides and stand high; spaces between half rings have concave surfaces, and width of spaces equal is to about 2–3 times the width of one ring. Opposite side of conch smooth due to disappearance of co−marginal ornament about midway between opposing sides of the conch.|