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The Chinese mystery snail, black snail, or trapdoor snail (Cipangopaludina chinensis), is a large freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Viviparidae. [3] [4] The Japanese variety of this species is black and usually a dark green, moss-like alga covers the shell. [citation needed]
Viviparidae. Viviparidae, sometimes known as the river snails or mystery snails, are a family of large aquatic gastropod mollusks, being some of the most widely distributed operculate freshwater snails. This family is classified in the informal group Architaenioglossa according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005.
V. arthuri now includes many snails that were formerly considered to be rare local endemics of the American Midwest. It now has one of the largest ranges of any land snail in the Western Hemisphere. In many areas, this snail lives in various types of forest habitat. It consumes leaf litter and organic layers on rock surfaces. Description
Diversity [2] Two freshwater species and numerous marine species. 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.
Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum. [2] The family Neritidae includes marine genera such as Nerita, marine and freshwater genera such as Neritina, and freshwater and brackish water genera such as Theodoxus.
Turbo sulcatus Woodward, 1833. Turbo ustulatus Lamarck, 1822. Turbo ventricosus Woodward, 1833. The common periwinkle or winkle (Littorina littorea) is a species of small edible whelk or sea snail, a marine gastropod mollusc that has gills and an operculum, and is classified within the family Littorinidae, the periwinkles.
These small snails, like all the species in the family Physidae, have shells that are sinistral, which means that when the shell is held with the spire pointing up and the aperture facing the viewer, then the aperture is on the left-hand side. The shells of Physa species have a long and large aperture, a pointed spire, and no operculum. The ...
Genus: Hydatina. Species: H. physis. Binomial name. Hydatina physis. (Linnaeus, 1758) Hydatina physis is a species of sea snail, a bubble snail, a marine opisthobranch gastropod mollusk in the family Aplustridae. Its common names include striped paper bubble, green-lined paper bubble, brown-lined paper bubble, and rose petal bubble shell.