Littorinoidea (Periwinkle) is a superfamily of snails. There are 558 species of Periwinkle, in 60 genera and 5 families. This superfamily has been around since the lopingian epoch. It includes groups like Zerotulidae, Skeneopsidae, and Periwinkles. Dead Periwinkle form shallow marine sediments. They have sexual reproduction.
EOL has data for 13 attributes, including: