| Sclerostoma Rudolphi, 1809 |
| Sclerostoma caninum Ercolani, 1859 |
| Sclerostoma edentatum Looss, 1900 |
| Sclerostoma vulgare Looss, 1900 |
| Strongylidae Baird, 1853 |
| Strongylinae Railliet, 1885 |
| Strongylus Mueller, 1780 |
| Strongylus abtrusus Railliet, 1898 |
| Strongylus acutus Lundahl, 1848 |
| Strongylus anseris Zeder, 1800 |
| Strongylus axei Cobbold, 1879 |
| Strongylus dentatum Rudolphi, 1803 |
| Strongylus edentatus (Looss, 1900) Railliet & Henry, 1909 |
| Strongylus equinus Mueller, 1780 |
| Strongylus lupi Rudolphi, 1809 |
| Strongylus minor Kuhn, 1829 |
| Strongylus polygyrus Dujardin, 1845 |
| Strongylus radiatus Rudolphi, 1803 |
| Strongylus subauricularis Rudolphi, 1819 |
| Strongylus tetracanthus Mehlis, 1831 |