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29 mollusk species in Zion National Park
Physella zionis
Oreohelix strigosa
Cochlicopa lubrica
Limacus flavus
Pupilla syngenes
Cornu aspersum
Euconulus fulvus
Rumina decollata
Vallonia gracilicosta
Zonitoides arboreus
Glyphyalinia indentata
Oreohelix subrudis
Pupilla blandii
Pupoides albilabris
Pyrgulopsis deserta
Pyrgulopsis kolobensis
Deroceras laeve
Gastrocopta ashmuni
Hawaiia minuscula
Pyrgulopsis lindahlae
Vallonia perspectiva
Vitrina pellucida
Orpiella cookensis
Physella gyrina
Vallonia pulchella
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