1. Afanasjeva, G.A., Supraordinal brachiopod classification, Paleontol. J., 2008, vol. 42, no. 8, pp. 792–812.
2. Astrova, G.G., Phylum Bryozoa: Moss Animals, in Osnovy paleontologii, (Fundamentals of Paleontology), vol. 7: Mshanki, brakhiopody. Prilozhenie: foronidy (Bryozoans and Brachiopods. Supplement: Phoronids), Orlov, Yu.A., Ed., Moscow: Akad. Nauk SSSR, 1960, pp. 13–112.
3. Bassler, R.S., Treatise on Invertebrate Paleontology. Part G. Bryozoa, Moore, R.C., Ed., Boulder CO–Lawrence KS: Geol. Soc. Am.–Univ. Kansas Press, 1953.
4. Boardman, R.S. and Cheetham, A.H., Degrees of colony dominance in stenolaemate and gymnolaemate Bryozoa, Animal Colonies. Development and Function through Time, Boardman, R.S., Cheetham, A.H., and Oliver, W.A., Jr., Eds., Stroudsburg: Dowden, Hutchinson and Ross, 1973, pp. 107–220.
5. Boardman, R.S., Cheetham, A.H., Blake, D.B., Utgaard, J., Karklins, O.L., Cook, P.L., Sandberg, P.A., Lutaud, G., and Wood, T.S., Treatise on Invertebrate Paleontology. Part G. Bryozoa, Revised, vol. 1: Introduction, Order Cystoporata, and Order Cryptostomata, Robinson, R.A., Ed., Boulder CO–Lawrence KS: Geol. Soc. Am.–Univ. Kansas Press, 1983, pp. 1–625.