Species
Hormograptus defensor (Öpik, 1928)
Type specimen data
Synonymy list
1928     Thallograptus defensor nov. sp. — Öpik , pp. 38, fig. 7
1930     Hormograptus defensor — Öpik , pp. 8
1958     Chaunograptus defensor (Öpik) — Obut & Rytzk , pp. 139
Selection of related publications
Öpik, A. 1928. Beiträge zur Kenntnis der Kukruse-(C2-C3-) Stufe in Eesti. III.  Tartu Ülikooli Geoloogia Instituudi Toimetused   12,      1-42.
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Hemichordata | 
| Class | Pterobranchia | 
| Subclass | Graptolithina | 
| Family | Wimanicrustidae | 
| Genus | Hormograptus | 
| Species | cervus | 
| defensor | |
| densitubularis | |
| luhai | |
| ramulus | |
| sphaericola | 
References based on distribution
- Öpik, 1928a Kohtla mine Kukruse Stage