| Citation | Jaekel, O., 1892. Onychodus sigmoides, Newb., aus dem Devon Nordamerikas. Zeitschrift der Deutschen Geologischen Gesellschaft 44:509. |
| DOI / ISBN | |
| PDF/Reference URL | https://www.biodiversitylibrary.org/page/43534293 |
| Ref. No. | 135490 |
| Language | German |
| Usage | not used yet |
| Comments on the publication | |
| Find this reference in | Google Scholar | Scirus | Species used from this reference |