Triviidae
Beachworn shells of Trivia merces, with sand grains stuck in the aperture
Scientific classification
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Subclass: Orthogastropoda Superorder: Caenogastropoda Order: Sorbeoconcha Suborder: Hypsogastropoda Infraorder: Littorinimorpha Superfamily: Velutinoidea Family: Triviidae Trochel, 1863
Genera
See text.
Synonyms
Ellatrivia Iredale, 1931

Triviidae is a taxonomic family of small sea snails, marine gastropod molluscs in the infraorder Littorinimorpha, within the order Sorbeoconcha.

Distribution

Species in this family are found in most temperate and tropical seas.

Shell description

Shells of this family are mostly small, oval or rounded, of cowry-shape, with the outer lip incurved to form a narrow denticulate aperture. The sculpture is of transverse ribs that may be interrupted by a dorsal groove.

Taxonomy

The following subfamilies have been recognized in the taxonomy of Bouchet & Rocroi of 2005

• Eratoinae Gill, 1871
  • tribe Eratoini Gill, 1871
  • † tribe Johnstrupiini Schilder, 1939
  • † tribe Eratotriviini Schilder, 1936
• Triviinae Troschel, 1863

Genera within the family Triviidae

• Decoriatrivia Cate, 1979
• Erato Risso, 1826
• Hespererato Schilder, 1932
• Niveria Jousseaume, 1884
• Proterato Schilder, 1927
• Pusula Jousseaume, 1884
• Trivia Broderip, 1837

References

• Triviidae (TSN 73170). Integrated Taxonomic Information System.
• Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
• Glen Pownall, New Zealand Shells and Shellfish, Seven Seas Publishing Pty Ltd, Wellington, New Zealand 1979 ISBN 85467-054-8