Littorinidae

The Littorinidae are a taxonomic family of over 200 species of sea snails, marine gastropod molluscs in the clade Littorinimorpha, commonly known as periwinkles and found worldwide.

In English-speaking countries, gastropod molluscs from other families, such as the Neritidae, are sometimes also commonly known as "winkles" because they are small, round snails that occupy a similar ecological niche.

These subfamilies have been recognized in the taxonomy of Bouchet & Rocroi (2005):

Genera within the family Littorinidae include:

subfamily ?

David G. Reid; Suzanne T. Williams (2004). "The subfamily Littorininae in the Temperate Southern Hemisphere: the genera Nodilittorina, Austrolittorina and Afrolittorina" (PDF). Records of the Australian Museum. 56: 75–122. doi:10.3853/j.0067-1975.56.2004.1393.