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Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includes many land and freshwater families, and several marine families.
Pulmonate land snails usually have two sets of tentacles on their head: the upper pair have an eye at the end; the lower pair are for olfaction. [1]In anatomy, an eyestalk (sometimes spelled eye stalk and also known as an ommatophore) is a protrusion that extends an eye away from the body, giving the eye a better field of view. [1]
There is a common spermoviduct, but then the male and female tracts divide and the male and female parts have widely separated openings. A free-swiming veliger larva is found in marine species of Ochidiidae, otherwise the development is direct. [27] [24] [28] Stylommatophora is the most diverse group of land snails and slugs.
Camaenidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea, the typical snails and their allies.This is one of the most diverse families in the clade Stylommatophora.
Isognomostoma isognomostomos is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicidae, the typical snails. Distribution
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