Photo Gallery

© The Field Museum - CC BY-NC

© The Field Museum - CC BY-NC

© The Field Museum - CC BY-NC

© The Field Museum - CC BY-NC

© The Field Museum - CC BY-NC

© The Field Museum - CC BY-NC

© The Field Museum - CC BY-NC

© The Field Museum - CC BY-NC

© The Field Museum - CC BY-NC
Taxonomy
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- Genus: Oreohelix
- Genus: (polygyridea) mesdon
- Genus: Concellaria
- Genus: Leptonema
- Genus: Nuculopsis
- Genus: Pleuropterus
- Genus: Propatella
- Genus: Punctopatella
- Genus: Rostellaria
- Genus: Rostellites
- Genus: Sairocaris
- Genus: Schizostoma
- Genus: Solenospira
- Genus: Sphaerodoma
- Genus: Stegocoelia (hypergonia)
- Genus: Stegocoelia (stegocoelia)
- Genus: Trochusina
- Genus: Tubulostium
- Genus: Weslernia
- Order: Archaeogastropoda
- Order: Architaenioglossa
- Order: Basommatophora
- Order: Bellerophontida
- Order: Bellerophontina
- Order: Caenogastropoda
- Order: Cephalaspidea
- Order: Cyrtoneritimorpha
- Order: Helicoidea
- Order: Heterobranchia
- Order: Limnophila
- Order: Littorinimorpha
- Order: Neogastropoda
- Order: Neotaenioglossa
- Order: Neritimorpha
- Order: Neritopsina
- Order: Planorbidea
- Order: Pleurotomarioidea
- Order: Prosobranchia
- Order: Ptenoglossa
- Order: Pulmonata
- Order: Sorbeoconcha
- Order: Stylommatophora
- Order: Unionoida
- Order: Vetigastropoda
- Subclass: Eogastropoda
- Subclass: Nudibranchia
- Subclass: Orthogastropoda
- Genus: Gastropoda
- Genus: Cyclostoma
- Species: Cyclostoma prevetusta
- Genus: Stagnicola
- Genus: Potamides
- Family: Pseudophoridae
- Family: Neptuneidae
- Family: Helicidae
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- Species: Cyclonema bilix (Conrad)
- Species: Cyclonema perstrialis Fenton & Fenton, 1924
- Species: Cyclonema pulchellum Miller & Gurley, 1896
- Species: Cyclonema montrealensis Billings, 1865
- Species: Cyclonema fluctuata James, 1874
- Species: Cyclonema pyramidata James, 1874
- Species: Cyclonema cincinnatiense Miller, 1882
- Species: Cyclonema daytonensis Foerste, 1899
- Species: Cyclonema hamiltoniae Hall, 1862
- Species: Cyclonema concinna Hall, 1876
- Species: Cyclonema lirata Hall, 1861
- Species: Cyclonema cancellatum Hall
- Species: Cyclonema pauper
- Subspecies: Cyclonema bilix conicum Miller, 1874
- Subspecies: Cyclonema bilix fluctuatum Conrad, 1842
- Species: Cyclonema humerosum Ulrich & Scofield, 1897
- Species: Cyclonema inflatum Ulrich & Scofield, 1897
- Species: Cyclonema varicosum (Hall, 1861)
- Species: Cyclonema mediale (Ulrich & Scofield, 1897)
- Species: Cyclonema minor James, 1878
- Species: Cyclonema simulans (Ulrich & Scofield, 1897)
- Species: Cyclonema transversum (Ulrich & Scofield, 1897)
- Species: Cyclonema sublaeve (Ulrich & Scofield, 1897)
- Species: Cyclonema percarinata (Hall, 1847)
- Species: Cyclonema limatum (Ulrich & Scofield, 1897)
- Species: Cyclonema mediale (Ulrich & Scofield, 1897)
- Species: Cyclonema elevata
- Species: Cyclonema varians Billings, 1857
- Species: Cyclonema globosa Weller, 1916