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Proceedings of the Davenport Academy of Natural Sciences v.5 1885-1889
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On Pyrgulopsis, a new genus of rissoid mollusk, with descriptions of two new forms
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By: Call, Richard Ellsworth, - Pilsby, Harry A
Type: Article
In: Proceedings of the Davenport Academy of Natural Sciences
Volume: 5
Date: 1886
Page Range: 9--14
Publication info: Davenport, Ia, Academy of Natural Sciences [etc.],