Species
Nikolivia oervigi (Karatajūtė-Talimaa, 1968)
Synonymy list
1967     Thelodus oervigi nomen nudum — Obruchev & Karatajūtė-Talimaa , pp. 10, fig. 2
1968     Turinia? oervigi — Karatajūte-Talimaa  , pp. 34-35, fig. I 1, 3-5
1978     Nikolivia oervigi — Karatajūtė-Talimaa , pp. 141-145, fig. 46, 47, 48
2004     Nikolivia oervigi (Karatajūtė-Talimaa, 1967) — Karatajūtė-Talimaa & Märss , pp. 55
2007     Nikolivia oervigi (Karatajūtė-Talimaa, 1968) — Märss et al. , pp. 111, fig. 124A, 125
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Chordata | 
| Subphylum | Vertebrata | 
| Superclass | Agnatha | 
| Class | Pteraspidomorphi | 
| Subclass | Thelodonti | 
| Order | Thelodontiformes | 
| Family | Nikoliviidae | 
| Genus | Nikolivia | 
| Species | aligera | 
| auriculata | |
| balabayi | |
| gutta | |
| oervigi |