|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Gastropoda - Goniasmatidae
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. G. Donald 1895||Shell conical, composed of more than five whorls. Whorls strongly angular below the middle, slightly angular above, just below the suture, flattened both above and below the strong angle. On the upper part of the whorl, about midway between the angle and the suture, there is a flat band, level with the surface, bounded on each side by a groove. This band probably represents a sinus in the outer lip. The lines of growth are strong and distinct; they curve backwards to the band above and forwards below, but are not discernible on the band itself. Surface smooth. Sutures deep. Base flattened. Mouth imperfectly preserved, subrhomboida], slightly longer than wide.|