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The Vermetidae, the worm snails or worm shells, are a taxonomic family of small to medium-sized sea snails, marine gastropod molluscs in the clade Littorinimorpha. [1] The shells of species in the family Vermetidae are extremely irregular, and do not resemble the average snail shell, hence the common name "worm shells" or "worm snails".
Included in the list are terrestrial gastropods (land snails and slugs) and freshwater and brackish water gastropods and bivalves (mussels and clams). Molluscs that are fully adapted to live in the sea are not included here, except for one marine pulmonate snail that breathes air.
Carinate flat-top snail (Neoplanorbis carinatus) Angled flat-top snail (Neoplanorbis smithi) Little flat-top snail (Neoplanorbis tantillus) Umbilicate flat-top snail (Neoplanorbis umbilicatus) Fish Lake physa (Physella microstriata) Acorn ramshorn (Planorbella multivolvis) Fish springs marshsnail (Stagnicola pilsbryi)
The anatomy of a common air-breathing land snail: much of this anatomy does not apply to gastropods in other clades or groups. Snails are distinguished by an anatomical process known as torsion, where the visceral mass of the animal rotates 180° to one side during development, such that the anus is situated more or less above the head. This ...
A snail is a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name snail is also used for most of the members of the molluscan class Gastropoda that have a coiled shell that is large enough for the animal to retract
Joan Collins has legs for days!. After the Dynasty actress, 91, shared a carousel of photos from her and husband Percy Gibson's recent vacation in Cancun, Mexico, via Instagram, fans couldn't help ...
In a perfect world, you’d blissfully add berries to your smoothies and yogurts without a second thought. In reality, berries come with a very real risk of contamination with certain foodborne ...
This list of marine gastropod genera in the fossil record is an attempt to list all the genera of sea snails or marine gastropod mollusks which have been found in the fossil record. Nearly all of these are genera of shelled forms, since it is relatively rare for gastropods without a shell ( sea slugs ) to leave any recognizable traces.