Genus
Arthroclema Billings, 1862
Selection of related publications
Gorjunova, R. V. 1985. Morfologiâ, sistema i filogeniâ mšanok (otrâd Rhabdomesida) [Морфология, система и филогения мшанок (отряд Rhabdomesida)].  Transactions of the Paleontological Institute (PIN)      208,   1-152.  Nauka. 
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.
Billings, E. 1862. Palaeozoic Fossils, vol. 1: Containing Descriptions and Figures of New or Little Known Species of organic Remains from the Silurian Rocks, the second portion. pp. 25-56.  Geological Survey of Canada. 
List of species
1. Arthroclema armatum Ulrich, 1890 | Volkhov Stage
2. Arthroclema vescum Gorjunova, 1985 | Uhaku Stage
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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 | |
| Genus | Cuneatopora | 
| Ottoseetaxsis |