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22 mollusk species in Wind Cave National Park
Vallonia gracilicosta
Gastrocopta holzingeri
Perpolita binneyana
Euconulus fulvus
Gastrocopta armifera
Pupilla muscorum
Vallonia parvula
Gastrocopta procera
Hawaiia minuscula
Vallonia pulchella
Pupoides albilabris
Discus whitneyi
Cochlicopa lubrica
Pupilla blandii
Vertigo arthuri
Vitrina pellucida
Zonitoides arboreus
Columella columella
Discus catskillensis
Gastrocopta pellucida
Striatura milium
Vertigo tridentata
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