Table 1. Elements of the nervous system of basally branching nemerteans.
| taxon | lateral lobe | dorsal lobe | ventral lobe | lateral tract | dorsal commissure | ventral commissure | cephalic cords | medullary cords | cephalic nerves | dorsal nerve | 2nd dorsal nerve | ventral nerve | esophag. nerve | probscid. nerve | cerebral organ | Author |
| Cephalothrix linearis | - | 1 pair | 1 pair | 5 pairs | 1 | 1 | 4 | 1 pair | - | 1 | - | 1 | - | 2 | - | this study |
| Procephalothrix filiformis | - | 1 pair | 1 pair | 5 pairs | 1 | 1 | 4 | 1 pair | - | 1 | - | 1 | - | 2 | - | this study |
| Carinina ochracea | 1 pair | - | - | 1 pair | 2 | 1 | - | 1 pair | >5- | 1 | 1 | - | 2 | 2 | 1 pair | this study |
| Tubulanus superbus | - | 1 pair | 1 pair | 1 pair | >5 | 1 | - | 1 pair | >5- | 1 | - | - | 2 | 2 | 1 pair | this study |
| Tubulanus polymorphus | - | 1 pair | 1 pair | 1 pair | >5 | 1 | - | 1 pair | >5- | 1 | - | - | 2 | 2 | 1 pair | this study |
| Callinera grandis | - | 1 pair | 1 pair | 1 pair | 2 | 1 | - | 1 pair | >5- | 1 | - | - | 2 | 2 | - | this study |
| Carinoma mutabilis | - | 1 pair | 1 pair | 1 pair | 3 | 1 | - | 1 pair | >35 | 1 | - | - | 2 | 2 | - | this study |
| Carinina grata | - | 1 pair | 1 pair | pair | 1 | 1 | - | 1 pair | ? | 1 | - | - | 2 | 2 | 1 pair | [4] |
| Carinina johnstoni | 1 pair | - | - | - | 1 | 1 | - | 1 pair | ? | 1 | - | - | 2 | ? | 1 pair | [36] |
| Carinesta dellechiajei | 1 pair | - | - | - | 1 | 1 | - | 1 pair | ? | 1 | - | - | 1 | ? | - | [36] |
| Callinera blanchardi | 1 Pair | - | - | - | 1 | 1 | - | 1 pair | several | 1 | - | - | 2 | 2 | - | [36] |
| Callinera quatrefagesi | 1 pair | - | - | - | 2 | 1 | - | 1 pair | several | 1 | - | - | 2 | ? | - | [36] |
| Cephalotrichella gaimardi | - | 1 pair | 1 pair | , | 1 | 2 | - | 1 pair | 4 | 1 | - | - | 2 | 2 | - | [36] |
| Carinesta orientalis | 1 pair | - | - | - | 2 | 2 | - | 1 pair | >5- | 1 | - | - | 2 | ? | - | [39] |
| Tubulanus lucidus | - | 1 pair | 1 pair | 1 pair | ? | 1 | - | 1 pair | ? | 1 | - | - | 2 | ? | 1 pair | [34] |
| Carinesta uchidai | 1 pair | - | - | + | ? | 1 | - | 1 pair | ? | 1 | - | - | 2 | ? | - | [34] |
| Procephalothrix fasciculus | - | 1 pair | 1 pair | + | 1 | 1 | 4 | 1 pair | - | 1 | - | 1 | - | ? | - | [34] |
| Procephalothrix arenarius | - | 1 pair | 1 pair | + | 1 | 1 | 4 | 1 pair | - | 1 | 1 | 1 | - | ? | - | [35] |
| Carinesta tubulanoides | 1 pair | - | - | - | 1 | 1 | - | 1 pair | + | 1 | 1 | - | ? | 2 | [35] | |
| Tubulanus norvegicus | 1 pair | - | - | - | 1 | ? | - | 1 pair | ? | 1 | 1 | - | 2 | ? | - | [73] |