Carter, J. L., D. E. Lee, T. N. Smirnova, Jin Yu-Gan, P. G. Baker, A. S. Dagys, Sun Dong-Li, and D. I. MacKinnon. “Part H, Brachiopoda (Revised), Vol. 5, Ch. 4, P. 1930–2018”. Treatise on Invertebrate Paleontology (January 1, 2006). Accessed November 3, 2024. https://journals.ku.edu/InvertebratePaleo/article/view/5576.