Species
Erratencrinurus (Erratencrinurus) ceras Krueger, 1971
Synonymy list
1971     Erratencrinurus ceras — Krueger , pp. 1146, fig. 5:1a-c
2004     Erra tencrinuncs (Erra tencrin uncs) ceras Krueger, 1971 — Krueger , pp. 113, fig. Taf. 12:17-27; Abb. 8
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Arthropoda | 
| Subphylum | Trilobita | 
| Order | Phacopida | 
| Suborder | Cheirurina | 
| Family | Encrinuridae | 
| Subfamily | Encrinurinae | 
| Genus | Erratencrinurus | 
| Subgenus | (Erratencrinurus) | 
| Species | brutoni | 
| capricornu | |
| ceras | |
| inopinatus | |
| jaegeri | |
| kauschi | |
| kummerowi | |
| melzensis | |
| nebeni | |
| postseebachi | |
| praecapricornu | |
| rhebergeni | |
| seebachi | |
| sellinensis | |
| Subspecies | heinrichi |