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Krummer See, near Sperenberg, Germany
latitude: 52.136009
longitude: 13.37187
Precision of location: Gauged from chart or map
Site Named Here: By name of island, bay, strait, lake, river, or stream, etc., named in source publication
| Castrella truncata | 1943 or earlier | (Salzgehalt etwa 0.8 º/º CaCl u. 0.35 º/º CaSO4) |