|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Gastropoda - Neogastropoda - Melongenidae
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.
|O. S. Adegoke 1977||Small to medium Heligmotoma, with low spire of about three-four whorls which are only slightly elevated above the flattened apical surface. Body whorl large, enclosing much of the spire from which it is separated by a shallow groove in which the growth striae describe shallow sinuses. Apical shoulder of body whorl bounded by variably developed carina which may or may not be noded. Parietal surface bears two unequal, moderate to heavy, oblique ridges. Body whorl conspicuously constricted below the parietal surface. Columella narrow to heavy, bears one oblique plication of variable prominence. Aperture wide, hemispherical.|