Carter, J. L., Hou Hong-Fei, J. G. Johnson, and Rémy Gourvennec. “Part H, Brachiopoda (Revised), Vol. 5, Ch. 2, P. 1769–1847”. Treatise on Invertebrate Paleontology (January 1, 2006). Accessed December 3, 2024. https://journals.ku.edu/InvertebratePaleo/article/view/5574.