| Citation | van der Horst, C.J. 1939 Hemichordata. Kl. Ordn. Tierreichs 4. 737 p. |
| DOI / ISBN | |
| Paper URL | |
| Ref. No. | 1363 |
| Language | English |
| Usage | not seen |
| Remarks | |
| Find this reference in | Google Scholar | Scirus | Species used from this reference |
| Cross references | 774, 1185 |