The Superfamily Trochoidea is further organized into finer groupings including:
- Family (12): Calliostomatidae · Cyclostrematidae · Elasmonematidae · Eucochlidae · Microdomatidae · Proconulidae · Skeneidae · Solariellidae · Stomatellidae · Trochidae · Tychobraheidae · Velainellidae
Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda. [more]
Liotiidae is a family of small sea snails, marine gastropod mollusks in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). [more]
Turbinidae, the turban snails, are a family of small to large marine gastropods. Turbinidae have a strong, thick calcareous operculum readily distinguishing them from the somewhat similar Trochidae or top snails, which have a corneous operculum. This strong operculum serves as a passive defensive structure against predators that try to enter by way of the aperture or that would break the shell at the outer lip. [more]
Stomatellidae is a family of small marine gastropods now included in the Vetigastropoda. [more]
The Trochidae, common name top snails, are a taxonomic family of very small to large sea snails, marine gastropod molluscs in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi from 2005). [more]
Tychobraheidae is an extinct family of gastropods in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). [more]
More info about the Family Velainellidae may be found here.
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