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Keywords from Image Description:
Filopaludina martensi operculum. Blackandwhite drawing of an outer side of an operculum of Filopaludina martensi Kobelt Die Gattung Paludina Lam Vivipara Montfort Neue Folge In Abbildungen nach der Natur mit Beschreibungen Systematisches ConchylienCabinet von Martini und Chemnitz Nrnberg pp org page plates org page page org