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14 mollusk species in Theodore Roosevelt National Park
Vallonia gracilicosta
Gastrocopta abbreviata
Gastrocopta holzingeri
Succinea grosvenorii
Pupilla blandii
Zonitoides arboreus
Discus whitneyi
Gastrocopta armifera
Gastrocopta similis
Hawaiia minuscula
Pupilla muscorum
Vallonia costata
Vallonia perspectiva
Euconulus fulvus
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