Viviparidae |

Campeloma decisum decisum
24.5 mm |

Campeloma decisum crassulum
41.4 mm |

Campeloma decisum decampi
32.9 mm |

Viviparus georgianus
25.0 mm | 
Viviparus intertextus
23.7 mm | 
Viviparus subpurpureus
22.2 mm |
| 
Lioplax subcarinata
14.3 mm | |
Pleuroceridae |

Lithasia armigera armigera
28.8 mm | 
Lithasia armigera jayana
28.9 mm | 
Lithasia armigera duttoniana
23.3 mm |

Lithasia geniculata geniculata
18.3 mm | 
Lithasia geniculata fuliginosa
21.5 mm | 
Lithasia geniculata pinguis
15.2 mm |

Io fluvialis
41.1 mm | 
Lithasia verrucosa
20.0 mm | 
Leptoxis crassa
19.6 mm |

Leptoxis praerosa praerosa
12.1 mm |

Leptoxis praerosa umbilicata
10.4 mm |

Leptoxis carinata
13.3 mm |

Pleurocera clavaeformis clavaeformis
24.0 mm |

Pleurocera clavaeformis unciale
21.7 mm |

Pleurocera troostiana troostiana
20.7 mm |

Pleurocera troostiana perstriata
19.0 mm | 
Pleurocera troostiana edgariana
18.4 mm | 
Pleurocera troostiana lyonii
23.9 mm |

Pleurocera canaliculata canaliculata
38.0 mm |

Pleurocera canaliculata pyrenellum
24.8 mm |

Pleurocera proxima
17.7 mm |

Pleurocera nassula
16.7 mm | 
Pleurocera catenaria catenaria
17.4 mm | 
Pleurocera modesta
15.9 mm |

Pleurocera simplex ebenum
15.6 mm |

Pleurocera simplex simplex
17.6 mm |

Pleurocera gabbiana
14.4 mm |

Pleurocera laqueata
19.4 mm
|

Pleurocera laqueata alveare
19.6 mm |

Pleurocera semicarinata semicarinata
17.8 mm
|
Pomatiopsidae |

Pomatiopsis cincinnatiensis
5.2 mm |
|

Pomatiopsis lapidaria
5.7 mm |
Hydrobioids |

Amnicola limosa
3.8mm |

Lyogyrus granum
2.6 mm |

Birgella subglobosa
7.7 mm |

Cincinnatia integra
4.5 mm | | 
Probythinella emarginata
3.1 mm |

Somatogyrus currierianus currierianus
4.4 mm | 
Somatogyrus currierianus umbilicata
3.9 mm | 
Somatogyrus virginicus
3.6 mm |

Marstonia arga
2.2 mm |

Marstonia pachyta pachyta
3.0 mm |

Marstonia pachyta angulobasis
2.4 mm |

Marstonia olivacea
3.9 mm | 
Marstonia scalariformis
3.2 mm | 
Holsingeria unthanksensis
3.7 mm |

Fontigens nickliniana
3.6 mm |

Fontigens orolibas
3.1 mm |

Fontigens sp. #1
2.4 mm |
Lymnaeidae |

Lymnea columella
10.4 mm |

Lymnaea humilis
5.9 mm |

Lymnaea cubensis/viator
7.4 mm |
Physidae |

Physa acuta
8.3 mm |

Physa pomilia
6.7 mm |

Physa gyrina
11.5 mm |
Planorbidae |

Helisoma trivolvis
18.5 mm |

Helisoma anceps
8.4 mm |

Planorbula armigera
7.1 mm |

Gyraulus parvus
2.9 mm |
|

Menetus dilatatus
2.4 mm |
Ancylidae |

Ferrissia rivularis
4.5 mm |

Ferrissia fragilis
3.1 mm |

Laevapex fuscus
5.9 mm |