''Polygyra septemvolva'', common name the Florida Flatcoil, is a species of air-breathing

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

, a terrestrial

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...

in the family Polygyridae.

Description

The shells of ''Polygyra septemvolva'' are known to show a high degree of variance in size within populations (6.6 - 14.8 mm). They have been proposed as a suitable

model organism A model organism (often shortened to model) is a non-human species that is extensively studied to understand particular biological phenomena, with the expectation that discoveries made in the model organism will provide insight into the workin ...

due to the ease of culturing and abundant reproduction in a suitable habitat.

Subspecies

* ''

Polygyra septemvolva febigeri ''Polygyra'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae. The two-IUCN listed taxa, '' Polygyra hippocrepis'' and '' Polygyra peregrina'', are now usually named ''Daedalochila ...

'' * ''

Polygyra septemvolva volvoxis ''Polygyra'' is a genus of air-breathing land snails, terrestrial molluscs, terrestrial pulmonate gastropod mollusks in the family Polygyridae. The two-IUCN listed taxa, ''Polygyra hippocrepis'' and ''Polygyra peregrina'', are now usually named ...

References

Polygyridae {{Polygyridae-stub