| Citation | Gill, T.N., 1884. The oldest living type of vertebrates. Science ns-4(97):524. |
| DOI / ISBN | http://dx.doi.org/10.1126/science.ns-4.97.524.a |
| PDF/Reference URL | |
| Ref. No. | 134884 |
| Language | English |
| Usage | not used yet |
| Comments on the publication | |
| Find this reference in | Google Scholar | Scirus | Species used from this reference |