| Nominal Species (n = 62) | Present allocation (n = 60) | Ref. |
|---|---|---|
| Micrura achrostocephala Gibson, 1997 | Micrura achrostocephala | 3477 |
| Lineus acutifrons Southern, 1913 | Lineus acutifrons | 19 |
| Micrura akkeshiensis Yamaoka, 1940 | Micrura akkeshiensis | 907 |
| Micrura alaskensis Coe, 1901 | Micrura alaskensis | 19 |
| Cerebratulus albifrons Coe, 1901 | Cerebratulus albifrons | 19 |
| Lineopselloides albilineus Gibson, 1990 | Lineopselloides albilineus | 3477 |
| Lineus alborostratus Takakura, 1898 | Lineus alborostratus | 907 |
| Cerebratulus alleni Wijnhoff, 1912 | Cerebratulus alleni | 19 |
| Meckelia australis Stimpson, 1857 | Cerebratulus australis | 3477 |
| Oxypolia beaumontiana Punnett, 1901 | Oxypolia beaumontiana | 19 |
| Cerebratulus bellus Stimpson, 1857 | Micrura bella | 907 |
| Siphonenteron bilineatum Meneghini, 1847 | Siphonenteron bilineatum | 3477 |
| Lineus binigrilinearis Gibson, 1990 | Lineus binigrilinearis | 3477 |
| Paramicrura borborophila Gibson & Sundberg, 1992 | Paramicrura borborophila | 3477 |
| Cerebratulus californiensis Coe, 1905 | Cerebratulus californiensis | 19 |
| Micrura callima Sundberg & Gibson, 1995 | Micrura callima | 937 |
| Micrura chlorapardalis Schwartz & Norenburg, 2005 | Micrura chlorapardalis | 415 |
| Lineus coccinus Burger, 1892 | Lineus coccinus | 19 |
| Cerebratulus darvelli Gibson, 1990 | Cerebratulus darvelli | 3477 |
| Cerebratulus fasciatus Stimpson, 1857 | Cerebratulus fasciatus | 907 |
| Micrura fasciolata Ehrenberg, 1831 | Micrura fasciolata | 19 |
| Micrura festiva Takakura, 1898 | Micrura bella | 907 |
| Lineus flavescens Coe, 1904 | Lineus flavescens | 19 |
| Lineus fulvus Iwata, 1954 | Lineus fulvus | 907 |
| Cerebratulus haddoni Punnett, 1900 | Cerebratulus haddoni | 944 |
| Cerebratulus herculeus Coe, 1901 | Cerebratulus herculeus | 19 |
| Micrura ignea Schwartz & Norenburg, 2005 | Micrura ignea | 415 |
| Cerebratulus johnstoni Wheeler, 1940 | Cerebratulus johnstoni | 947 |
| Cerebratulus longiceps Coe, 1901 | Cerebratulus longiceps | 19 |
| Micrura magna Yamaoka, 1940 | Micrura magna | 907 |
| Cerebratulus magneticus Gibson, 1981 | Cerebratulus magneticus | 942 |
| Cerebratulus malvini Wheeler, 1934 | Cerebratulus malvini | 3477 |
| Cerebratulus marginatus Renier, 1804 | Cerebratulus marginatus | 19 |
| Euborlasia maycoli Hookabe & Kajihara, 2020 | Euborlasia maycoli | 3477 |
| Cerebratulus montgomeryi Coe, 1901 | Cerebratulus montgomeryi | 19 |
| Cerebratulus natans Punnett, 1900 | Cerebratulina natans | 3477 |
| Meckelia nigra Stimpson, 1855 | Dushia nigra | 3477 |
| Cerebratulus occidentalis Coe, 1901 | Cerebratulus occidentalis | 19 |
| Micrura olivaris Coe, 1905 | Micrura olivaris | 19 |
| Micconemertes orientalis Gibson, 1997 | Micconemertes orientalis | 3477 |
| Cerebratulus orochi Kajihara, 2020 | Cerebratulus orochi | 3477 |
| Cerebratulus pantherinus Hubrecht, 1879 | Cerebratulus pantherinus | 19 |
| Meckelia piperata Stimpson, 1855 | Iwatanemertes piperata | 3477 |
| Yinia pratensis Shichun & Jingrang, 1998 | Yinia pratensis | 1790 |
| Perissonemertes pyrrhocephala Gibson, 1990 | Perissonemertes pyrrhocephala | 3477 |
| Cerebratulus queenslandicus Punnett, 1900 | Cerebratulus queenslandicus | 944 |
| Micrura rockalliensis Dollfus, 1924 | Micrura rockalliensis | 19 |
| Meckelia rubella Stimpson, 1855 | Cerebratulus rubellus | 3477 |
| Micrura rubramaculosa Schwartz & Norenburg, 2005 | Micrura rubramaculosa | 415 |
| Micrella rufa Punnett, 1901 | Micrella rufa | 19 |
| Micrura scotica Stephenson, 1911 | Micrura scotica | 19 |
| Meckelia sinensis Stimpson, 1855 | Cerebratulus sinensis | 3477 |
| Quasilineus sinicus Gibson, 1990 | Quasilineus sinicus | 3477 |
| Lineus spatiosus Iwata, 1954 | Lineus spatiosus | 907 |
| Lineus striatus Griffin, 1898 | Micrura bella | 907 |
| Lineus torquatus Coe, 1901 | Lineus torquatus | 19 |
| Utolineus uberis Gibson, 1990 | Utolineus uberis | 3477 |
| Micrura uchidai Yamaoka, 1940 | Micrura uchidai | 907 |
| Micrura verrilli Coe, 1901 | Micrura verrilli | 19 |
| Eousia verticivaria Gibson, 1990 | Eousia verticivaria | 3477 |
| Planaria viridis Fabricius, 1776 | Lineus viridis | 930 |
| Praealbonemertes whangateaunienses Cantell, 1993 | Praealbonemertes whangateaunienses | 1258 |