Subfamilies included within the family Pyramidellidae vary according to the taxonomy consulted. The currently leading taxonomy is the taxonomy of Bouchet & Rocroi (2005) আরও দেখুন

The following genera have become synonyms (but some species in this genera have not yet been reassigned) :
• Actaeopyramis P. Fischer, 1885: synonym of আরও দেখুন

The length of the slender, elongated (turreted or conical) shells varies between 0.5 mm and 3.5 cm, but most species in the family have shells which are smaller than 13 mm.
The texture of these shells is smooth or sculptured আরও দেখুন

The following genera are currently difficult to place within existing subtaxa of the Pyramidellidae.
• Charilda Iredale, 1929
• আরও দেখুন

This family is found worldwide, but many species are only found in relatively small geographical ranges. The species found at the Cape Verdes are mainly endemic species. আরও দেখুন

The Pyramidellidae are ectoparasites, feeding mainly on other molluscs and on annelid worms, but some are known to feed on peanut worms and crustaceans. A few species in … আরও দেখুন

The name of this taxonomic family comes from the shape of the shell, which is like a pyramid. More specifically, the shape is like a right circular cone, which is equivalent to a right pyramid whose base has many sides. আরও দেখুন