| Scientific Name | Author | English Name |
|---|---|---|
| Eupera cubensis | (Prime, 1865) | Mottled fingernailclam |
| Eupera singleyi | Pilsbry | |
| Musculium lacustre | (Müller, 1774) | Lake fingernailclam |
| Musculium partumeium | (Say, 1822) | Swamp fingernailclam |
| Musculium securis | (Prime, 1852) | Pond fingernailclam |
| Musculium transversum | (Say, 1829) | Long fingernailclam |
| Pisidium adamsi | Stimpson, 1851 | Adam peaclam |
| Pisidium amnicum | (Müller, 1774) | Greater European peaclam |
| Pisidium casertanum | (Poli, 1791) | Ubiquitous peaclam |
| Pisidium compressum | Prime, 1852 | Ridgebeak peaclam |
| Pisidium conventus | Clessin, 1877 | Alpine peaclam |
| Pisidium cruciatum | Sterki, 1895 | Ornamented peaclam |
| Pisidium dubium | (Say, 1817) | Greater eastern peaclam |
| Pisidium equilaterale | Prime, 1852 | Round peaclam |
| Pisidium fallax | Sterki, 1896 | River peaclam |
| Pisidium ferrugineum | Prime, 1852 | Rusty peaclam |
| Pisidium fultoni | Kuiper, 1983 | |
| Pisidium henslowanum | (Sheppard, 1825) | Henslow peaclam |
| Pisidium idahoense | Roper, 1890 | Giant Northern peaclam |
| Pisidium insigne | Gabb, 1868 | Tiny peaclam |
| Pisidium lilljeborgi | (Clessin, 1886) | Lilljeborg peaclam |
| Pisidium milium | Held, 1836 | Quadrangular pillclam |
| Pisidium nitidum | Jenyns, 1832 | Shiny peaclam |
| Pisidium plenilunium | (Melvill & Standen, 1907) | |
| Pisidium punctatum | Sterki, 1895 | Perforated peaclam |
| Pisidium punctiferum | (Guppy, 1867) | Striate peaclam |
| Pisidium rotundatum | Prime, 1852 | Fat peaclam |
| Pisidium sanguinichristi | Taylor, 1987 | Sangre de cristo peaclam |
| Pisidium subtruncatum | Malm, 1855 | Shortended peaclam |
| Pisidium supinum | Schmidt, 1850 | Humpbacked peaclam |
| Pisidium ultramontanum | Prime, 1865 | Montane peaclam |
| Pisidium variabile | Prime, 1852 | Triangular peaclam |
| Pisidium ventricosum | Prime, 1851 | Globular peaclam |
| Pisidium walkeri | Sterki, 1895 | Walker peaclam |
| Sphaerium corneum | (Linnaeus, 1758) | European fingernailclam |
| Sphaerium fabale | (Prime, 1852) | River fingernailclam |
| Sphaerium nitidum | Westerlund, 1876 | Arctic fingernailclam |
| Sphaerium occidentale | (Lewis, 1856) | Herrington fingernailclam |
| Sphaerium patella | (Gould, 1850) | Rocky mountain fingernailclam |
| Sphaerium rhomboideum | (Say, 1822) | Rhomboid fingernailclam |
| Sphaerium simile | (Say, 1817) | Grooved fingernailclam |
| Sphaerium striatinum | (Lamarck, 1818) | Striated fingernailclam |