Boardman, R. S., Lutaud, G., Wood, T. S., Karklins, O. L., Utgaard, J., Cheetham, A. H., & Cook, P. L. (1983). Part G, Bryozoa (Revised), vol. 1, Complete Volume. Treatise on Invertebrate Paleontology. https://doi.org/10.17161/dt.v0i0.5185