| physella acuta | | USA: Schuykill River at Fairmont Park, Philadelphia, Pennsylvania | | 49825110 |
| physella acuta | | USA: Schuykill River at Fairmont Park, Philadelphia, Pennsylvania | | 49825108 |
| physella acuta | | USA: Schuykill River at Fairmont Park, Philadelphia, Pennsylvania | | 49616912 |
| physella acuta | | USA: Schuykill River at Fairmont Park, Philadelphia, Pennsylvania | | 49616911 |