| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Fluminicola | seminalis | 12 |
| 2 | Fluminicola | dalli | 2 |
| 3 | Fluminicola | hindsi | 2 |
| 4 | Fluminicola | fusca | 2 |
| 5 | Fluminicola | neritoides | 2 |
| 6 | Fluminicola | favillaceus | 1 |
| 7 | Fluminicola | fremonti | 1 |
| 8 | Fluminicola | fuscus | 1 |
| 9 | Fluminicola | lunsfordensis | 1 |
| 10 | Fluminicola | multifarius | 1 |
| 11 | Fluminicola | turbiniformis | 1 |
| 12 | Fluminicola | umbilicatus | 1 |
| 13 | Fluminicola | warnerensis | 1 |
| 14 | Fluminicola | potemicus | 1 |
| 15 | Fluminicola | ahjumawi | 1 |
| 16 | Fluminicola | nuttalliana | 1 |
| 17 | Fluminicola | anserinus | 1 |
| 18 | Fluminicola | caballensis | 1 |
| 19 | Fluminicola | coloradoensis | 1 |
| 20 | Fluminicola | erosus | 1 |