Triviidae

Taxobox
name = Triviidae

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image_caption = Beachworn shells of "Trivia merces", with sand grains stuck in the aperture
regnum = Animalia
phylum = Mollusca
classis = Gastropoda
subclassis = Orthogastropoda
superordo = Caenogastropoda
ordo = Sorbeoconcha
subordo = Hypsogastropoda
infraordo = Littorinimorpha
superfamilia = Velutinoidea
familia = Triviidae
familia_authority = Trochel, 1863
subdivision_ranks = Genera
subdivision = 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.

hell 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

*
* 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