MolluscaBase source details
Shimek, B. (1890). A new species of fresh water mollusk. Bulletin of the Laboratories of Natural History of the State University of Iowa, 1(3-4): 214-215, plate 3.
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Shimek, B.
1890
A new species of fresh water mollusk.
Bulletin of the Laboratories of Natural History of the State University of Iowa
1(3-4): 214-215, plate 3
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Ancylus obliquus Shimek, 1890 accepted as Ferrissia fragilis (Tryon, 1863) accepted as Ferrissia californica (Rowell, 1863) (original description)
