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Polygyridae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea. [2]The Polygyridae make up a significant proportion of the land snail fauna of eastern North America, and are also found in western North America, northern Central America, and are present on some Caribbean islands.
Edible land snails range in size from about 2 millimetres (5 ⁄ 64 in) long to the giant African snails, which occasionally grow up to 312 mm (1 ft 1 ⁄ 4 in) in length. "Escargot" most commonly refers to either Cornu aspersum or to Helix pomatia , although other varieties of snails are eaten.
Most of the non-pulmonate land snails belong to lineages in the Caenogastropoda, and tend to have a gill and an operculum. The largest clade of land snails is the Cyclophoroidea, with more than 7,000 species. [6] Many of these operculate land snails live in habitats or microhabitats that are sometimes (or often) damp or wet, such as in moss.
The family name endures in southeast Fort Worth. The Wilkerson-Greines Activity Center, a $7.4 million, high school athletic facility with an indoor Olympic-size pool and a 5,000 seat basketball ...
Stylommatophora is an order [3] of air-breathing land snails and slugs, terrestrial pulmonate gastropod molluscs. This taxon includes most land snails and slugs . Stylommatophorans lack an operculum , but some close their shell apertures with temporary "operculum" ( epiphragm ) made of calcified mucus.
Hikers inadvertently disrupt the leaf litter cover, and crush snails. Rock climbers, too, have killed snails and destroyed their habitat unknowingly. [13] Human activities such as logging, housing developments, and forest fires can all alter the environmental conditions that the flat-spired three-toothed snail needs to survive. [13]
The grove snail, brown-lipped snail or lemon snail (Cepaea nemoralis) is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc. [3] It is one of the most common large species of land snail in Europe, and has been introduced to North America. Subspecies. Cepaea nemoralis etrusca (Rossmässler, 1835) [4]
This group includes land snails and land slugs. Loss of the shell has taken place many times in different groups that are not evolutionarily closely related, and land snails and slugs are most often treated together as a single group in specialized malacological literature. [2] [3] All terrestrial molluscs belong to the class Gastropoda.