Species
Arthroclema armatum Ulrich, 1890
Synonymy list
1890     Arthroclema armatum — Ulrich , pp. 194
1911     Arthroclema armatum Ulrich — Bassler , pp. 151, fig. text fig. 73
1985     Arthroclema cf. armatum Ulrich — Taylor & Curry , pp. 156
Selection of related publications
Taylor, P. D., Curry, G. B. 1985. The earliest known Fenestrate Bryozoan, with a short review of Lower Ordovician Bryozoa.  Palaeontology   28,   1,   147-158.
Bassler, R. S. 1911. The Early Paleozoic Bryozoa of the Baltic Provinces.  Bulletin of the US National Museum   77,      1-382.
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Bryozoa | 
| Class | Stenolaemata | 
| Superorder | Palaeostomata | 
| Order | Cryptostomata | 
| Suborder | Rhabdomesida | 
| Superfamily | Nikiforovellina | 
| Family | Arthroclemidae | 
| Subfamily | Arthrocleminae | 
| Genus | Arthroclema | 
| Species | armatum | 
| pulchella | |
| vescum | 
References based on distribution
- Bassler, 1911b Tallinn
- Bassler, 1911b Lower Ordovician
- Taylor & Curry, 1985 Volkhov Stage