Karklins, O. L., and D. B. Blake. “Part G, Bryozoa (Revised), Vol. 1, Ch. 5 , P. 489-592”. Treatise on Invertebrate Paleontology (January 1, 1983). Accessed April 7, 2025. https://journals.ku.edu/InvertebratePaleo/article/view/5183.