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Source: Wikipedia
| Helicodiscus parallelus | |
|---|---|
| A drawing of a live specimen of Helicodiscus parallelus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Stylommatophora |
| Family: | Helicodiscidae |
| Genus: | Helicodiscus |
| Species: | H. parallelus
|
| Binomial name | |
| Helicodiscus parallelus | |
| Synonyms[2] | |
| |
Helicodiscus parallelus, common name the compound coil, is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicodiscidae.
Helicodiscus parallelus is the type species of the genus Helicodiscus.

Distribution
[edit]This species occurs in the following countries and islands:
- Northern Mexico.[3]
- Great Lakes region.[4]
- Great Britain as a "hot-house alien"
References
[edit]- ^ Say, T. 1821. Descriptions of univalve shells of the United States. - Journal of the Academy of Natural Sciences of Philadelphia 2 (1): 149-179.
- ^ "Helicodiscus parallelus". WoRMS. World Register of Marine Species. Retrieved 30 December 2021.
- ^ Helicodiscus parallelus at AnimalBase, accessed 15 December 2008.
- ^ List of non-marine mollusks of the Indiana Dunes, Lake Erie, Indiana.