|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||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||Small to medium sized, shortly fusiform gastropods with shouldered whorls having a concave ramp and base straightly sloping into an anterior siphonal neck of short to moderate length which is bent to the left and abaperturally, and has near its anterior end a well-developed siphonal fasciole. The shell appears to be out-of-round, a little flattened aperture-to-hack and expanded laterally. It is ornamented by narrow spiral ribs which override strong, short axial ribs. The axial ribs are most pronounced on the periphery. The spire is less than half of the total shell height. The aperture is elongate oval with well-demarked inner lip and flaring outer lip. The inner lip has two pseudofolds near the base of the whorl and another near the posterior end of the aperture. The outer lip is thickened and denticulated with the strongest denticulations opposite the base of the whorl.|