Carlson, S. J., N. M. Savage, E. F. Owen, R. E. Grant, Sun Dong-Li, A. S. Dagys, and M. O. Manceñido. “Part H, Brachiopoda (Revised), Vol. 4, Ch. 4, P. 1218–1308”. Treatise on Invertebrate Paleontology (January 1, 2002). Accessed November 21, 2024. https://journals.ku.edu/InvertebratePaleo/article/view/5565.