| Nominal Species (n = 26) | Present allocation (n = 24) | Ref. |
|---|---|---|
| Cobbionema acrocerca Filipjev, 1922 | Cobbionema acrocerca | 19 |
| Gammanema cancellatum Gerlach, 1955 | Gammanema cancellatum | 19 |
| Choniolaimus chiliensis Murphy, 1964 | Choniolaimus chiliensis | 19 |
| Pseudonchus deconincki Warwick, 1969 | Pseudonchus deconincki | 19 |
| Halichoanolaimus dolichurus Ssaweljev, 1912 | Halichoanolaimus dolichurus | 19 |
| Pseudonchus donsi Allgen, 1948 | Pseudonchus donsi | 19 |
| Halichoanolaimus duodecimpapillatus Timm, 1952 | Halichoanolaimus duodecimpapillatus | 19 |
| Gammanema ferox Cobb, 1920 | Gammanema rapax | 75097 |
| Pseudonchus gerlachi Warwick, 1969 | Pseudonchus gerlachi | 19 |
| Halichoanolaimus hinemoae Ditlevsen, 1930 | Halichoanolaimus robustus | 75097 |
| Pseudonchus jenseni Murphy, 1964 | Pseudonchus jenseni | 19 |
| Pseudonchus kosswigi Murphy, 1964 | Pseudonchus kosswigi | 19 |
| Halichoanolaimus longicauda Ditevsen, 1918 | Halichoanolaimus longicauda | 19 |
| Pseudonchus longus Allgen, 1949 | Pseudonchus longus | 19 |
| Halichoanolaimus macrospiculatus Hopper, 1961 | Halichoanolaimus macrospiculatus | 19 |
| Pseudonchus northumbriensis Warwick, 1969 | Pseudonchus northumbriensis | 19 |
| Pseudonchus norwegicus Allgen, 1933 | Pseudonchus norwegicus | 19 |
| Choniolaimus papillatus Ditlevsen, 1918 | Choniolaimus papillatus | 19 |
| Halichoanolaimus quattuordecimpapillatus Chitwood, 1951 | Halichoanolaimus quattuordecimpapillatus | 19 |
| Halichoanolaimus rapax Ssaweljev, 1912 | Gammanema rapax | 75097 |
| Halichoanolaimus raritanensis Hasbrouck, 1866 | Halichoanolaimus raritanensis | 19 |
| Spiliphera robusta Bastian, 1865 | Halichoanolaimus robustus | 75097 |
| Pseudonchus rotundicephalus Cobb, 1920 | Pseudonchus rotundicephalus | 19 |
| Latronema sertatum Wieser, 1959 | Latronema sertatum | 19 |
| Gammanema smithi Murphy, 1964 | Gammanema smithi | 19 |
| Pseudonchus symmetricus De Coninck, 1942 | Pseudonchus symmetricus | 19 |