Genus
Eoconulus Cooper, 1956
Selection of related publications
Popov L., Nõlvak J., Holmer, L. 1994. Late Ordovician lingulate brachiopods from Estonia.  Palaeontology   37,   3,   627-650.
Holmer, L. E. 1989. Middle Ordovician phosphatic inarticulate brachiopods from Västergötland and Dalarna, Sweden.  Fossils and Strata   26,      1-172.
Biernat, G. 1973. Ordovician Inarticulate Brachiopods from Poland and Estonia.  Palaeontologia Polonica   28,      1-116.
Gorjansky, V. J. 1969. Bezzamkovye brahiopody kembrijskih i ordovikskih otloženij severo-zapada Russkoj platformy. pp. 1-176.  Nedra. 
List of species
1. Eoconulus clivosus Popov, 1975 | Lower Ordovician
3. Eoconulus robustus Holmer, 1989 | Darriwilian
4. Eoconulus semiregularis Biernat, 1973 | Pirgu Stage
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Linguliformea | 
| Class | Lingulata | 
| Order | Acrotretida | 
| Superfamily | Acrotretoidea | 
| Family | Eoconulidae | 
| Genus | Eoconulus | 
| Species | clivosus | 
| cryptomyus | |
| robustus | |
| semiregularis | |
| Genus | Otariconulus |