Tomocyclus
Genus of gastropods
From Wikipedia, the free encyclopedia
Tomocyclus is a genus of land snails, terrestrial gastropod mollusks in the subfamily Megalomastomatinae of the family Megalomastomatidae.[1]
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| Tomocyclus | |
|---|---|
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| Shell of Tomocyclus simulacrum (syntype at MNHN, Paris) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Architaenioglossa |
| Superfamily: | Cyclophoroidea |
| Family: | Megalomastomatidae |
| Genus: | Tomocyclus Crosse & P. Fischer, 1872 |
| Synonyms[1] | |
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Megalomastoma (Tomocyclus) Crosse & P. Fischer, 1872 | |
Description
(Original description in Latin) The shell is perforated, turreted, and truncated. The aperture is subcircular and small. The peristome is double-layered: the inner layer is briefly projected inward, while the outer layer is broadly expanded, resembling a leaf. The upper margin of the outer lip is interrupted, with a unique, incised, and hollowed-out appearance.
The operculum is circular, corneous but relatively thick, and spirally wound. It is slightly flattened anteriorly and reinforced posteriorly by a blunt, rounded process. The margins of the operculum exhibit a somewhat lamellar structure. [2]
Species
- Tomocyclus fistulosus F. G. Thompson, 1963
- Tomocyclus gealei Crosse & P. Fischer, 1872
- Tomocyclus guatemalensis (L. Pfeiffer, 1851)
- Tomocyclus lunai Bartsch, 1945
- Tomocyclus simulacrum (Morelet, 1849)
- Synonyms
- Tomocyclus constrictus Bartsch & J. P. E. Morrison, 1942: synonym of Tomocyclus simulacrum (Morelet, 1849) (junior synonym)
- Tomocyclus copanensis (G. B. Sowerby I, 1850): synonym of Tomocyclus simulacrum (Morelet, 1849) (junior synonym)
- Tomocyclus siphonis Bartsch & J. P. E. Morrison, 1942: synonym of Tomocyclus simulacrum (Morelet, 1849) (junior synonym)
