Littorina etolonensis Sinelnikova in Gladenkov & Sinelnikova, 1990 Littorina grandis Middendorff, 1848 Littorina praesqualida Sinelnikova in Gladenkov & Sinelnikova, 1990 Littorina squalida is a species of sea snail, a marine gastropod mollusk in the family Littorinidae, the winkles or periwinkles.

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