|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Gastropoda - Neogastropoda - Perissityidae
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.
|W. P. Popenoe and L. R. Saul 1987||Compactly turriculate to pyriform gastropods of small to moderate size with an angulate whorl periphery made nodose by short axial ribs. Aperture deltoid in shape with a broad posterior sinus adapical to the whorl periphery. Outer lip with posterior and medial denticulations. Columella with a fold near the base of the previous whorl and posterior and anterior denticulations.|